diff --git a/.ruby-version b/.ruby-version
index b1b25a5f..530cdd91 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.2.2
+2.2.4
diff --git a/Gemfile b/Gemfile
index f5443231..80f956f4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-ruby "2.2.2"
+ruby "2.2.4"
 
 gem "rails", "4.2.3"
 gem "pg"
@@ -28,6 +28,8 @@ gem "devise"
 gem "google-analytics-rails"
 gem "interactor"
 gem "kaminari"
+gem "omniauth-facebook"
+gem "omniauth-google-oauth2"
 gem "responders"
 gem "rollbar", "~> 0.10.3"
 gem "seedbank"
diff --git a/Gemfile.lock b/Gemfile.lock
index 3fd62acb..01ef885e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,7 +20,7 @@ GEM
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    active_link_to (1.0.2)
+    active_link_to (1.0.3)
       actionpack
     activejob (4.2.3)
       activesupport (= 4.2.3)
@@ -38,73 +38,71 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.3.6)
+    addressable (2.3.8)
     arel (6.0.3)
-    ast (2.0.0)
-    astrolabe (1.3.0)
-      parser (>= 2.2.0.pre.3, < 3.0)
-    autoprefixer-rails (4.0.2.2)
+    ast (2.1.0)
+    astrolabe (1.3.1)
+      parser (~> 2.2)
+    autoprefixer-rails (6.0.3)
       execjs
+      json
     awesome_print (1.6.1)
     bcrypt (3.1.10)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
-    brakeman (3.0.3)
+    brakeman (3.1.1)
       erubis (~> 2.6)
       fastercsv (~> 1.5)
       haml (>= 3.0, < 5.0)
-      highline (~> 1.6.20)
+      highline (~> 1.6)
       multi_json (~> 1.2)
-      ruby2ruby (~> 2.1.1)
-      ruby_parser (~> 3.6.2)
+      ruby2ruby (>= 2.1.1, < 2.3.0)
+      ruby_parser (~> 3.7.0)
       sass (~> 3.0)
+      slim (>= 1.3.6, < 4.0)
       terminal-table (~> 1.4)
     builder (3.2.2)
-    bullet (4.14.7)
+    bullet (4.14.9)
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.9.0)
-    bundler-audit (0.3.1)
+    bundler-audit (0.4.0)
       bundler (~> 1.2)
       thor (~> 0.18)
-    byebug (3.1.2)
-      columnize (~> 0.8)
-      debugger-linecache (~> 1.2)
-    capybara (2.4.4)
+    byebug (6.0.2)
+    capybara (2.5.0)
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
-    capybara-webkit (1.3.1)
-      capybara (>= 2.0.2, < 2.5.0)
+    capybara-webkit (1.7.1)
+      capybara (>= 2.3.0, < 2.6.0)
       json
     choice (0.2.0)
     code_analyzer (0.4.5)
       sexp_processor
-    codeclimate-test-reporter (0.4.7)
+    codeclimate-test-reporter (0.4.8)
       simplecov (>= 0.7.1, < 1.0.0)
     coderay (1.1.0)
-    coffee-rails (4.0.1)
+    coffee-rails (4.1.0)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0, < 5.0)
-    coffee-script (2.2.0)
+    coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.7.0)
-    coffeelint (1.9.1)
+    coffee-script-source (1.9.1.1)
+    coffeelint (1.11.0)
       coffee-script
       execjs
       json
     colored (1.2)
-    columnize (0.8.9)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
-    daemons (1.1.9)
-    database_cleaner (1.3.0)
+    daemons (1.2.3)
+    database_cleaner (1.5.0)
     debug_inspector (0.0.2)
-    debugger-linecache (1.2.0)
-    decent_exposure (2.3.1)
-    devise (3.4.1)
+    decent_exposure (2.3.2)
+    devise (3.5.4)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
       railties (>= 3.2.6, < 5)
@@ -113,15 +111,16 @@ GEM
       warden (~> 1.2.3)
     diff-lcs (1.2.5)
     docile (1.1.5)
-    dotenv (0.9.0)
-    dotenv-rails (0.9.0)
-      dotenv (= 0.9.0)
+    dotenv (2.0.2)
+    dotenv-rails (2.0.2)
+      dotenv (= 2.0.2)
+      railties (~> 4.0)
     email_spec (1.6.0)
       launchy (~> 2.1)
       mail (~> 2.2)
     erubis (2.7.0)
-    eventmachine (1.0.7)
-    execjs (2.2.2)
+    eventmachine (1.0.8)
+    execjs (2.6.0)
     factory_girl (4.5.0)
       activesupport (>= 3.0.0)
     factory_girl_rails (4.5.0)
@@ -129,51 +128,54 @@ GEM
       railties (>= 3.0.0)
     faker (1.5.0)
       i18n (~> 0.5)
+    faraday (0.9.2)
+      multipart-post (>= 1.2, < 3)
     fastercsv (1.5.5)
-    foreman (0.63.0)
-      dotenv (>= 0.7)
-      thor (>= 0.13.6)
-    formulaic (0.2.0)
+    foreman (0.78.0)
+      thor (~> 0.19.1)
+    formulaic (0.3.0)
       activesupport
       capybara
       i18n
     foundation-icons-sass-rails (3.0.0)
       railties (>= 3.1.1)
       sass-rails (>= 3.1.1)
-    foundation-rails (5.4.5.0)
+    foundation-rails (5.5.3.2)
       railties (>= 3.1.0)
-      sass (>= 3.2.0)
-    fuubar (2.0.0.rc1)
-      rspec (~> 3.0.rc1)
+      sass (>= 3.3.0, < 3.5)
+    fuubar (2.0.0)
+      rspec (~> 3.0)
       ruby-progressbar (~> 1.4)
     globalid (0.3.6)
       activesupport (>= 4.1.0)
     google-analytics-rails (0.0.6)
-    haml (4.0.6)
+    haml (4.0.7)
       tilt
-    highline (1.6.21)
+    hashie (3.4.2)
+    highline (1.7.8)
     i18n (0.7.0)
     interactor (3.1.0)
-    jasmine (2.3.0)
+    jasmine (2.3.1)
       jasmine-core (~> 2.3)
       phantomjs
       rack (>= 1.2.1)
       rake
-    jasmine-core (2.3.0)
+    jasmine-core (2.3.4)
     jasmine-jquery-rails (2.0.3)
-    jquery-rails (4.0.4)
+    jquery-rails (4.0.5)
       rails-dom-testing (~> 1.0)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (1.8.3)
+    jwt (1.5.1)
     kaminari (0.16.3)
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
-    launchy (2.4.2)
+    launchy (2.4.3)
       addressable (~> 2.3)
-    letter_opener (1.2.0)
+    letter_opener (1.4.1)
       launchy (~> 2.2)
-    libv8 (3.16.14.7)
+    libv8 (3.16.14.11)
     loofah (2.0.3)
       nokogiri (>= 1.5.9)
     mail (2.6.3)
@@ -181,27 +183,49 @@ GEM
     metamagic (3.1.7)
       rails (>= 3.0.0)
     method_source (0.8.2)
-    mime-types (2.6.1)
-    mini_portile (0.6.2)
-    minitest (5.8.0)
-    multi_json (1.11.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    mime-types (2.6.2)
+    mini_portile2 (2.0.0)
+    minitest (5.8.3)
+    multi_json (1.11.2)
+    multi_xml (0.5.5)
+    multipart-post (2.0.0)
+    nokogiri (1.6.7.2)
+      mini_portile2 (~> 2.0.0.rc2)
+    oauth2 (1.0.0)
+      faraday (>= 0.8, < 0.10)
+      jwt (~> 1.0)
+      multi_json (~> 1.3)
+      multi_xml (~> 0.5)
+      rack (~> 1.2)
+    omniauth (1.2.2)
+      hashie (>= 1.2, < 4)
+      rack (~> 1.0)
+    omniauth-facebook (2.0.1)
+      omniauth-oauth2 (~> 1.2)
+    omniauth-google-oauth2 (0.2.8)
+      addressable (~> 2.3)
+      jwt (~> 1.0)
+      multi_json (~> 1.3)
+      omniauth (>= 1.1.1)
+      omniauth-oauth2 (>= 1.1.1)
+    omniauth-oauth2 (1.3.1)
+      oauth2 (~> 1.0)
+      omniauth (~> 1.2)
     orm_adapter (0.5.0)
-    parser (2.2.2.3)
+    parser (2.2.3.0)
       ast (>= 1.1, < 3.0)
-    pg (0.17.1)
+    pg (0.18.3)
     phantomjs (1.9.8.0)
     powerpack (0.1.1)
-    pry (0.9.12.6)
-      coderay (~> 1.0)
-      method_source (~> 0.8)
+    pry (0.10.2)
+      coderay (~> 1.1.0)
+      method_source (~> 0.8.1)
       slop (~> 3.4)
-    pry-rails (0.3.2)
+    pry-rails (0.3.4)
       pry (>= 0.9.10)
-    pundit (1.0.0)
+    pundit (1.0.1)
       activesupport (>= 3.0.0)
-    quiet_assets (1.0.2)
+    quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
     rack (1.6.4)
     rack-canonical-host (0.1.0)
@@ -226,14 +250,14 @@ GEM
       activesupport (>= 4.2.0.beta, < 5.0)
       nokogiri (~> 1.6.0)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-erd (1.4.1)
+    rails-erd (1.4.3)
       activerecord (>= 3.2)
       activesupport (>= 3.2)
       choice (~> 0.2.0)
       ruby-graphviz (~> 1.2)
     rails-html-sanitizer (1.0.2)
       loofah (~> 2.0)
-    rails_12factor (0.0.2)
+    rails_12factor (0.0.3)
       rails_serve_static_assets
       rails_stdout_logging
     rails_best_practices (1.15.7)
@@ -245,70 +269,71 @@ GEM
       json
       require_all
       ruby-progressbar
-    rails_serve_static_assets (0.0.2)
-    rails_stdout_logging (0.0.3)
+    rails_serve_static_assets (0.0.4)
+    rails_stdout_logging (0.0.4)
     railties (4.2.3)
       actionpack (= 4.2.3)
       activesupport (= 4.2.3)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rainbow (2.0.0)
-    rake (10.4.2)
-    ref (1.0.5)
+    rake (10.5.0)
+    ref (2.0.0)
     require_all (1.3.2)
-    responders (2.1.0)
-      railties (>= 4.2.0, < 5)
+    responders (2.1.1)
+      railties (>= 4.2.0, < 5.1)
     rollbar (0.10.14)
       multi_json (~> 1.5)
-    rspec (3.0.0)
-      rspec-core (~> 3.0.0)
-      rspec-expectations (~> 3.0.0)
-      rspec-mocks (~> 3.0.0)
-    rspec-core (3.0.2)
-      rspec-support (~> 3.0.0)
-    rspec-expectations (3.0.2)
+    rspec (3.3.0)
+      rspec-core (~> 3.3.0)
+      rspec-expectations (~> 3.3.0)
+      rspec-mocks (~> 3.3.0)
+    rspec-core (3.3.2)
+      rspec-support (~> 3.3.0)
+    rspec-expectations (3.3.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.0.0)
-    rspec-mocks (3.0.2)
-      rspec-support (~> 3.0.0)
-    rspec-rails (3.0.1)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      railties (>= 3.0)
-      rspec-core (~> 3.0.0)
-      rspec-expectations (~> 3.0.0)
-      rspec-mocks (~> 3.0.0)
-      rspec-support (~> 3.0.0)
-    rspec-support (3.0.2)
-    rubocop (0.31.0)
+      rspec-support (~> 3.3.0)
+    rspec-mocks (3.3.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.3.0)
+    rspec-rails (3.3.3)
+      actionpack (>= 3.0, < 4.3)
+      activesupport (>= 3.0, < 4.3)
+      railties (>= 3.0, < 4.3)
+      rspec-core (~> 3.3.0)
+      rspec-expectations (~> 3.3.0)
+      rspec-mocks (~> 3.3.0)
+      rspec-support (~> 3.3.0)
+    rspec-support (3.3.0)
+    rubocop (0.34.2)
       astrolabe (~> 1.3)
-      parser (>= 2.2.2.1, < 3.0)
+      parser (>= 2.2.2.5, < 3.0)
       powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.4)
     ruby-graphviz (1.2.2)
     ruby-progressbar (1.7.5)
-    ruby2ruby (2.1.4)
+    ruby2ruby (2.2.0)
       ruby_parser (~> 3.1)
       sexp_processor (~> 4.0)
-    ruby_parser (3.6.6)
+    ruby_parser (3.7.1)
       sexp_processor (~> 4.1)
-    safe_yaml (1.0.1)
-    sass (3.4.13)
-    sass-rails (5.0.3)
+    safe_yaml (1.0.4)
+    sass (3.4.19)
+    sass-rails (5.0.4)
       railties (>= 4.0.0, < 5.0)
       sass (~> 3.1)
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
-      tilt (~> 1.1)
-    scss_lint (0.38.0)
+      tilt (>= 1.1, < 3)
+    scss_lint (0.42.2)
       rainbow (~> 2.0)
-      sass (~> 3.4.1)
+      sass (~> 3.4.15)
     seedbank (0.3.0)
-    sexp_processor (4.5.1)
-    shoulda-matchers (2.8.0)
-      activesupport (>= 3.0.0)
-    simple_form (3.1.0)
+    sexp_processor (4.6.0)
+    shoulda-matchers (3.0.0)
+      activesupport (>= 4.0.0)
+    simple_form (3.2.0)
       actionpack (~> 4.0)
       activemodel (~> 4.0)
     simplecov (0.10.0)
@@ -316,53 +341,57 @@ GEM
       json (~> 1.8)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
-    skim (0.9.3)
+    skim (0.10.0)
       coffee-script
       coffee-script-source (>= 1.2.0)
-      slim (~> 2.0.0)
-      sprockets
-    slim (2.0.3)
-      temple (~> 0.6.6)
+      slim (>= 3.0)
+      sprockets (>= 2, < 4)
+    slim (3.0.6)
+      temple (~> 0.7.3)
       tilt (>= 1.3.3, < 2.1)
-    slim-rails (0.2.1)
-      slim (>= 0.9.2)
+    slim-rails (3.0.1)
+      actionmailer (>= 3.1, < 5.0)
+      actionpack (>= 3.1, < 5.0)
+      activesupport (>= 3.1, < 5.0)
+      railties (>= 3.1, < 5.0)
+      slim (~> 3.0)
     slop (3.6.0)
-    spring (1.3.6)
+    spring (1.4.0)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
-    sprockets (3.3.1)
-      rack (~> 1.0)
-    sprockets-rails (2.3.2)
+    sprockets (3.4.0)
+      rack (> 1, < 3)
+    sprockets-rails (2.3.3)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
-    temple (0.6.10)
-    terminal-table (1.4.5)
-    therubyracer (0.12.1)
+    temple (0.7.6)
+    terminal-table (1.5.2)
+    therubyracer (0.12.2)
       libv8 (~> 3.16.14.0)
       ref
-    thin (1.6.1)
-      daemons (>= 1.0.9)
-      eventmachine (>= 1.0.0)
-      rack (>= 1.0.0)
+    thin (1.6.4)
+      daemons (~> 1.0, >= 1.0.9)
+      eventmachine (~> 1.0, >= 1.0.4)
+      rack (~> 1.0)
     thor (0.19.1)
     thread_safe (0.3.5)
-    tilt (1.4.1)
+    tilt (2.0.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uglifier (2.4.0)
+    uglifier (2.7.2)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
     uniform_notifier (1.9.0)
-    warden (1.2.3)
+    warden (1.2.4)
       rack (>= 1.0)
-    web-console (2.1.3)
+    web-console (2.2.1)
       activemodel (>= 4.0)
       binding_of_caller (>= 0.7.2)
       railties (>= 4.0)
       sprockets-rails (>= 2.0, < 4.0)
-    webmock (1.17.3)
-      addressable (>= 2.2.7)
+    webmock (1.21.0)
+      addressable (>= 2.3.6)
       crack (>= 0.3.2)
     xpath (2.0.0)
       nokogiri (~> 1.3)
@@ -404,6 +433,8 @@ DEPENDENCIES
   launchy
   letter_opener
   metamagic
+  omniauth-facebook
+  omniauth-google-oauth2
   pg
   pry-rails
   pundit
@@ -432,3 +463,6 @@ DEPENDENCIES
   uglifier (>= 1.3.0)
   web-console (~> 2.0)
   webmock
+
+BUNDLED WITH
+   1.11.2
diff --git a/app/controllers/omniauth_callbacks_controller.rb b/app/controllers/omniauth_callbacks_controller.rb
new file mode 100644
index 00000000..bee67a14
--- /dev/null
+++ b/app/controllers/omniauth_callbacks_controller.rb
@@ -0,0 +1,49 @@
+class OmniauthCallbacksController < Devise::OmniauthCallbacksController
+  SocialProfile::PROVIDERS.each do |provider|
+    define_method(provider.to_s) do
+      begin
+        current_user ? connect_social_profile : handle_sign_in
+      rescue AuthVerificationPolicy::OauthError => e
+        redirect_to root_path, flash: { notice: e.to_s }
+      end
+    end
+  end
+
+  private
+
+  def connect_social_profile
+    OauthConnectOrganizer.new(auth, current_user).call
+    redirect_to edit_user_registration_path
+  end
+
+  def auth
+    request.env["omniauth.auth"]
+  end
+
+  def handle_sign_in
+    user = auth_organizer.new(auth).user
+    sign_in_and_redirect user, event: :authentication
+  end
+
+  def auth_organizer
+    auth_verified? ? VerifiedAuthOrganizer : UnverifiedAuthOrganizer
+  end
+
+  def auth_verified?
+    AuthVerificationPolicy.new(auth).verified?
+  end
+
+  def after_sign_in_path_for(resource)
+    if resource.confirmed?
+      edit_user_registration_path
+    else
+      session[:auth_verified?] = auth_verified?
+      resource.reset_password(new_password, new_password)
+      finish_signup_path(resource)
+    end
+  end
+
+  def new_password
+    @new_password ||= Devise.friendly_token.first(8)
+  end
+end
diff --git a/app/controllers/social_profiles_controller.rb b/app/controllers/social_profiles_controller.rb
new file mode 100644
index 00000000..eac940b2
--- /dev/null
+++ b/app/controllers/social_profiles_controller.rb
@@ -0,0 +1,21 @@
+class SocialProfilesController < ApplicationController
+  before_action :authenticate_user!
+
+  expose(:social_profiles) { current_user.social_profiles }
+  expose(:social_profile)
+
+  def destroy
+    if social_profile.destroy
+      flash[:notice] = t "flash.actions.destroy.notice", resource_name: resource_name
+    else
+      flash[:alert] = t "flash.actions.destroy.alert", resource_name: resource_name
+    end
+    redirect_to edit_user_registration_url
+  end
+
+  private
+
+  def resource_name
+    SocialProfile.model_name.human
+  end
+end
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
new file mode 100644
index 00000000..14a7adbc
--- /dev/null
+++ b/app/controllers/users_controller.rb
@@ -0,0 +1,39 @@
+class UsersController < ApplicationController
+  before_action :authenticate_user!, only: :home
+
+  expose(:user, attributes: :user_params)
+
+  def home
+  end
+
+  def finish_signup
+    return false unless request.patch?
+
+    user.update_attributes(user_params) ? sign_in_user : render_errors
+  end
+
+  private
+
+  def user_params
+    params.require(:user).permit(%i(full_name email password))
+  end
+
+  def sign_in_user
+    confirm_user
+    sign_in(user, bypass: true)
+    redirect_to root_path, notice: "Welcome!"
+  end
+
+  def render_errors
+    render :finish_signup
+  end
+
+  def confirm_user
+    if session[:auth_verified?]
+      session[:auth_verified?] = nil
+      user.update_attribute(:confirmed_at, Time.zone.now)
+    else
+      user.send_confirmation_instructions
+    end
+  end
+end
diff --git a/app/helpers/omniauth_helper.rb b/app/helpers/omniauth_helper.rb
new file mode 100644
index 00000000..88471a14
--- /dev/null
+++ b/app/helpers/omniauth_helper.rb
@@ -0,0 +1,5 @@
+module OmniauthHelper
+  def provider_name(provider)
+    t "active_record.attributes.social_profile.provider_name.#{provider}"
+  end
+end
diff --git a/app/interactors/connect_social_profile.rb b/app/interactors/connect_social_profile.rb
new file mode 100644
index 00000000..2b92e7d8
--- /dev/null
+++ b/app/interactors/connect_social_profile.rb
@@ -0,0 +1,27 @@
+class ConnectSocialProfile
+  attr_reader :user, :auth
+  private :user, :auth
+
+  def initialize(user, auth)
+    @user = user
+    @auth = auth
+  end
+
+  def call
+    social_profile ? update_social_profile : create_social_profile
+  end
+
+  private
+
+  def social_profile
+    @social_profile ||= SocialProfile.from_omniauth(auth)
+  end
+
+  def update_social_profile
+    social_profile.update_attribute(:user, user)
+  end
+
+  def create_social_profile
+    user.social_profiles.create!(provider: auth.provider, uid: auth.uid)
+  end
+end
diff --git a/app/interactors/create_user_from_auth.rb b/app/interactors/create_user_from_auth.rb
new file mode 100644
index 00000000..eae04f7c
--- /dev/null
+++ b/app/interactors/create_user_from_auth.rb
@@ -0,0 +1,25 @@
+class CreateUserFromAuth
+  attr_reader :auth
+  private :auth
+
+  def initialize(auth)
+    @auth = auth
+  end
+
+  def call
+    user = User.new(
+      email: auth.info.email,
+      full_name: auth.info.name,
+      password: new_password,
+      password_confirmation: new_password
+    )
+    user.skip_confirmation_notification! && user.save!
+    user
+  end
+
+  private
+
+  def new_password
+    @new_password ||= Devise.friendly_token.first(8)
+  end
+end
diff --git a/app/interactors/find_user_by_email_service.rb b/app/interactors/find_user_by_email_service.rb
new file mode 100644
index 00000000..b32dc0f0
--- /dev/null
+++ b/app/interactors/find_user_by_email_service.rb
@@ -0,0 +1,25 @@
+class FindUserByEmailService
+  attr_reader :auth
+  private :auth
+
+  def initialize(auth)
+    @auth = auth
+  end
+
+  def call
+    return unless user
+
+    create_social_profile
+    user
+  end
+
+  private
+
+  def user
+    @user ||= User.find_by(email: auth.info.email)
+  end
+
+  def create_social_profile
+    user.social_profiles.create!(provider: auth.provider, uid: auth.uid)
+  end
+end
diff --git a/app/interactors/oauth_connect_organizer.rb b/app/interactors/oauth_connect_organizer.rb
new file mode 100644
index 00000000..439fef80
--- /dev/null
+++ b/app/interactors/oauth_connect_organizer.rb
@@ -0,0 +1,37 @@
+class OauthConnectOrganizer
+  attr_reader :auth, :user
+  private :auth, :user
+
+  def initialize(auth, user)
+    @auth = auth
+    @user = user
+  end
+
+  def call
+    unless user.confirmed?
+      auth_verified? ? process_user_confirmation : fail_oauth
+    end
+
+    connect_social_profile
+  end
+
+  private
+
+  def auth_verified?
+    AuthVerificationPolicy.new(auth).verified?
+  end
+
+  def process_user_confirmation
+    user.confirm
+    user.send_reset_password_instructions
+  end
+
+  def fail_oauth
+    fail AuthVerificationPolicy::OauthError,
+      "Please confirm your account before connecting your #{auth.provider} account."
+  end
+
+  def connect_social_profile
+    ConnectSocialProfile.new(user, auth).call
+  end
+end
diff --git a/app/interactors/unverified_auth_organizer.rb b/app/interactors/unverified_auth_organizer.rb
new file mode 100644
index 00000000..50d4e7cb
--- /dev/null
+++ b/app/interactors/unverified_auth_organizer.rb
@@ -0,0 +1,34 @@
+class UnverifiedAuthOrganizer
+  attr_reader :auth
+  private :auth
+
+  def initialize(auth)
+    @auth = auth
+  end
+
+  def user
+    check_user_by_email!
+
+    found_user.send_confirmation_instructions unless found_user.confirmed?
+    found_user
+  end
+
+  private
+
+  def check_user_by_email!
+    user_by_email = User.find_by(email: auth.info.email)
+    fail AuthVerificationPolicy::OauthError, "Please, connect your account from profile page." if user_by_email
+  end
+
+  def found_user
+    user_found_by_uid || new_user
+  end
+
+  def user_found_by_uid
+    @user_found_by_uid ||= SocialProfile.from_omniauth(auth).try(:user)
+  end
+
+  def new_user
+    @new_user ||= CreateUserFromAuth.new(auth).call
+  end
+end
diff --git a/app/interactors/verified_auth_organizer.rb b/app/interactors/verified_auth_organizer.rb
new file mode 100644
index 00000000..4bb6c0e8
--- /dev/null
+++ b/app/interactors/verified_auth_organizer.rb
@@ -0,0 +1,26 @@
+class VerifiedAuthOrganizer
+  attr_reader :auth
+  private :auth
+
+  def initialize(auth)
+    @auth = auth
+  end
+
+  def user
+    user_found_by_uid || user_found_by_email || new_user
+  end
+
+  private
+
+  def user_found_by_uid
+    SocialProfile.from_omniauth(auth).try(:user)
+  end
+
+  def user_found_by_email
+    FindUserByEmailService.new(auth).call
+  end
+
+  def new_user
+    CreateUserFromAuth.new(auth).call
+  end
+end
diff --git a/app/models/social_profile.rb b/app/models/social_profile.rb
new file mode 100644
index 00000000..e1118f6b
--- /dev/null
+++ b/app/models/social_profile.rb
@@ -0,0 +1,12 @@
+class SocialProfile < ActiveRecord::Base
+  PROVIDERS = OmniAuth.strategies.map { |s| s.to_s.demodulize.underscore }.drop(1)
+
+  belongs_to :user
+
+  validates :user, :provider, :uid, presence: true
+  validates :uid, uniqueness: { scope: :provider }
+
+  def self.from_omniauth(auth)
+    find_by(provider: auth.provider, uid: auth.uid)
+  end
+end
diff --git a/app/models/user.rb b/app/models/user.rb
index 521dad51..7b84a228 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,9 +1,12 @@
 class User < ActiveRecord::Base
   devise :database_authenticatable, :registerable, :confirmable,
-    :recoverable, :rememberable, :trackable, :validatable
+    :recoverable, :rememberable, :trackable, :validatable,
+    :omniauthable, omniauth_providers: SocialProfile::PROVIDERS
 
   validates :full_name, presence: true
 
+  has_many :social_profiles, dependent: :destroy
+
   def to_s
     full_name
   end
diff --git a/app/policies/auth_verification_policy.rb b/app/policies/auth_verification_policy.rb
new file mode 100644
index 00000000..158152e7
--- /dev/null
+++ b/app/policies/auth_verification_policy.rb
@@ -0,0 +1,35 @@
+class AuthVerificationPolicy
+  class OauthError < StandardError
+  end
+
+  attr_reader :auth
+  private :auth
+
+  def initialize(auth)
+    @auth = auth
+  end
+
+  def verified?
+    request_verification_for
+  rescue NoMethodError
+    fail_with_error
+  end
+
+  private
+
+  def request_verification_for
+    send(auth.provider)
+  end
+
+  def fail_with_error
+    fail ArgumentError, I18n.t("omniauth.verification.not_implemented", kind: auth.provider)
+  end
+
+  def facebook
+    auth.info.verified? || auth.extra.raw_info.verified?
+  end
+
+  def google_oauth2
+    auth.extra.raw_info.email_verified?
+  end
+end
diff --git a/app/views/social_profiles/_list.html.slim b/app/views/social_profiles/_list.html.slim
new file mode 100644
index 00000000..69571677
--- /dev/null
+++ b/app/views/social_profiles/_list.html.slim
@@ -0,0 +1,14 @@
+- if social_profiles.any?
+  b Successfully authorized via:
+  ul.js-social-profiles
+    - social_profiles.each do |social_profile|
+      li = link_to "#{provider_name(social_profile.provider)} (#{social_profile.uid.truncate(9)}). Unauthorize?",
+                   social_profile,
+                   data: { confirm: "Are you sure you want to remove this social profile?" },
+                   method: :delete,
+                   class: "js-unauthorize"
+
+b Add service to sign in with:
+ul
+  - SocialProfile::PROVIDERS.each do |provider|
+    li = link_to provider_name(provider), user_omniauth_authorize_path(provider)
diff --git a/app/views/users/finish_signup.html.slim b/app/views/users/finish_signup.html.slim
new file mode 100644
index 00000000..7757819b
--- /dev/null
+++ b/app/views/users/finish_signup.html.slim
@@ -0,0 +1,16 @@
+.row
+  h3 Finish Signup
+
+  .medium-6.columns
+    = simple_form_for user,
+      as: 'user',
+      url: finish_signup_path(user),
+      html: { method: :patch } do |f|
+
+      .form-inputs
+        = f.input :email, required: true, autofocus: true,  placeholder: "Your email here"
+
+        = f.input :password, required: true, hint: '', placeholder: "Your password here"
+
+      .form-actions
+        = f.button :submit, "Finish Signup"
diff --git a/app/views/users/registrations/edit.html.slim b/app/views/users/registrations/edit.html.slim
index 0decc952..dcd25388 100644
--- a/app/views/users/registrations/edit.html.slim
+++ b/app/views/users/registrations/edit.html.slim
@@ -24,6 +24,8 @@
         = f.button :submit, 'Update'
 
   .medium-6.columns.end
+    = render "social_profiles/list", social_profiles: current_user.social_profiles
+
     h6
       b Cancel my account
     p
diff --git a/config.ru b/config.ru
index 93fb28fa..193e5fed 100644
--- a/config.ru
+++ b/config.ru
@@ -1,4 +1,4 @@
 # This file is used by Rack-based servers to start the application.
 
-require ::File.expand_path("../config/environment",  __FILE__)
+require ::File.expand_path("../config/environment", __FILE__)
 run Rails.application
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 53838903..2f14eb9a 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -44,5 +44,5 @@
 
   # Application specific options
   #
-  config.slim_options =  { pretty: true }
+  config.slim_options = { pretty: true }
 end
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 88d6da92..e3f40aaa 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -13,7 +13,7 @@
   config.eager_load = false
 
   # Configure static asset server for tests with Cache-Control for performance.
-  config.serve_static_files  = true
+  config.serve_static_files = true
   config.static_cache_control = "public, max-age=3600"
 
   # Show full error reports and disable caching.
diff --git a/config/initializers/devise.rb b/config/initializers/devise.rb
index e5b9fb2c..0f57869c 100644
--- a/config/initializers/devise.rb
+++ b/config/initializers/devise.rb
@@ -230,6 +230,8 @@
   # Add a new OmniAuth provider. Check the wiki for more information on setting
   # up on your models and hooks.
   # config.omniauth :github, 'APP_ID', 'APP_SECRET', scope: 'user,public_repo'
+  config.omniauth :google_oauth2, ENV["GOOGLE_CLIENT_ID"], ENV["GOOGLE_CLIENT_SECRET"]
+  config.omniauth :facebook, ENV["FACEBOOK_APP_ID"], ENV["FACEBOOK_APP_SECRET"], info_fields: "email, name, verified"
 
   # ==> Warden configuration
   # If you want to use other strategies, that are not supported by Devise, or
diff --git a/config/locales/models/social_profile.en.yml b/config/locales/models/social_profile.en.yml
new file mode 100644
index 00000000..9a464125
--- /dev/null
+++ b/config/locales/models/social_profile.en.yml
@@ -0,0 +1,7 @@
+en:
+  active_record:
+    attributes:
+      social_profile:
+        provider_name:
+          google_oauth2: Google
+          facebook: Facebook
diff --git a/config/locales/oauth.en.yml b/config/locales/oauth.en.yml
new file mode 100644
index 00000000..9f69b348
--- /dev/null
+++ b/config/locales/oauth.en.yml
@@ -0,0 +1,5 @@
+en:
+  omniauth:
+    verification:
+      failure: Your %{kind} account can't be used to sign in. Please verify it via profile page.
+      not_implemented: Verification checking is not implemented for %{kind}.
diff --git a/config/routes.rb b/config/routes.rb
index 2053e363..cc204395 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,7 +1,9 @@
 Rails.application.routes.draw do
-  devise_for :users
+  devise_for :users, controllers: { omniauth_callbacks: "omniauth_callbacks" }
 
   resource :feedback, only: %i(new create)
+  resources :social_profiles, only: :destroy
+  match "/users/:id/finish_signup" => "users#finish_signup", via: %i(get patch), as: :finish_signup
 
   with_options controller: :pages do
     get :about
diff --git a/db/migrate/20151208195800_create_social_profiles.rb b/db/migrate/20151208195800_create_social_profiles.rb
new file mode 100644
index 00000000..1278f4d8
--- /dev/null
+++ b/db/migrate/20151208195800_create_social_profiles.rb
@@ -0,0 +1,9 @@
+class CreateSocialProfiles < ActiveRecord::Migration
+  def change
+    create_table :social_profiles do |t|
+      t.references :user, index: true
+      t.string :provider, index: true, null: false, default: ""
+      t.string :uid, index: true, null: false, default: ""
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 423f9aa7..a979f0b0 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,29 +11,39 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20100713113845) do
+ActiveRecord::Schema.define(version: 20151208195800) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
+  create_table "social_profiles", force: :cascade do |t|
+    t.integer "user_id"
+    t.string  "provider", default: "", null: false
+    t.string  "uid",      default: "", null: false
+  end
+
+  add_index "social_profiles", ["provider"], name: "index_social_profiles_on_provider", using: :btree
+  add_index "social_profiles", ["uid"], name: "index_social_profiles_on_uid", using: :btree
+  add_index "social_profiles", ["user_id"], name: "index_social_profiles_on_user_id", using: :btree
+
   create_table "users", force: :cascade do |t|
-    t.string   "email",                  limit: 255, default: "", null: false
-    t.string   "encrypted_password",     limit: 255, default: "", null: false
-    t.string   "reset_password_token",   limit: 255
+    t.string   "email",                  default: "", null: false
+    t.string   "encrypted_password",     default: "", null: false
+    t.string   "reset_password_token"
     t.datetime "reset_password_sent_at"
     t.datetime "remember_created_at"
-    t.string   "confirmation_token",     limit: 255
+    t.string   "confirmation_token"
     t.datetime "confirmed_at"
     t.datetime "confirmation_sent_at"
-    t.string   "unconfirmed_email",      limit: 255
-    t.integer  "sign_in_count",                      default: 0
+    t.string   "unconfirmed_email"
+    t.integer  "sign_in_count",          default: 0
     t.datetime "current_sign_in_at"
     t.datetime "last_sign_in_at"
-    t.string   "current_sign_in_ip",     limit: 255
-    t.string   "last_sign_in_ip",        limit: 255
-    t.datetime "created_at",                                      null: false
-    t.datetime "updated_at",                                      null: false
-    t.string   "full_name",              limit: 255
+    t.string   "current_sign_in_ip"
+    t.string   "last_sign_in_ip"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+    t.string   "full_name"
   end
 
   add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree
diff --git a/spec/factories/feedbacks.rb b/spec/factories/feedbacks.rb
index 5cc030b2..f3893e8f 100644
--- a/spec/factories/feedbacks.rb
+++ b/spec/factories/feedbacks.rb
@@ -1,7 +1,7 @@
 FactoryGirl.define do
   factory :feedback do
     email
-    name  { Faker::Name.name }
+    name { Faker::Name.name }
     message { Faker::Lorem.paragraph }
     phone { Faker::PhoneNumber.phone_number }
   end
diff --git a/spec/factories/social_profiles.rb b/spec/factories/social_profiles.rb
new file mode 100644
index 00000000..483521b7
--- /dev/null
+++ b/spec/factories/social_profiles.rb
@@ -0,0 +1,7 @@
+FactoryGirl.define do
+  factory :social_profile do
+    user
+    provider "facebook"
+    uid "123545"
+  end
+end
diff --git a/spec/factories/users.rb b/spec/factories/users.rb
index b98724b1..fb58dd2a 100644
--- a/spec/factories/users.rb
+++ b/spec/factories/users.rb
@@ -17,4 +17,8 @@
       user.update(confirmation_sent_at: 3.days.ago)
     end
   end
+
+  trait :from_auth_hashie do
+    email "joe@bloggs.com"
+  end
 end
diff --git a/spec/features/user/connect_social_account_spec.rb b/spec/features/user/connect_social_account_spec.rb
new file mode 100644
index 00000000..23181359
--- /dev/null
+++ b/spec/features/user/connect_social_account_spec.rb
@@ -0,0 +1,59 @@
+require "rails_helper"
+
+feature "Connect social account" do
+  context "oauth confirmed" do
+    include_context :stub_omniauth
+
+    before { click_connect_fb }
+
+    context "user confirmed" do
+      let!(:user) { create(:user, :confirmed, :from_auth_hashie) }
+
+      scenario "User connects social account" do
+        expect(page).to have_connected_account("Facebook")
+      end
+    end
+
+    context "user not confirmed" do
+      let!(:user) { create(:user, :from_auth_hashie) }
+
+      scenario "User have to confirm own account" do
+        expect(page).to have_connected_account("Facebook")
+
+        open_email(user.email)
+
+        expect(current_email).to have_subject("Confirmation instructions")
+        expect(current_email).to have_body_text(user.full_name)
+      end
+    end
+  end
+
+  context "oauth not confirmed" do
+    include_context :stub_not_verified_omniauth
+
+    before { click_connect_fb }
+
+    context "user confirmed" do
+      let!(:user) { create(:user, :confirmed, :from_auth_hashie) }
+
+      scenario "User connects social account" do
+        expect(page).to have_connected_account("Facebook")
+      end
+    end
+
+    context "user not confirmed" do
+      let!(:user) { create(:user, :from_auth_hashie) }
+
+      scenario "User sees alert" do
+        expect(page).to have_text("Please confirm your account before connecting your facebook account.")
+        expect(current_path).to eq(root_path)
+      end
+    end
+  end
+
+  def click_connect_fb
+    login_as(user, scope: :user)
+    visit edit_user_registration_path(user)
+    click_link "Facebook"
+  end
+end
diff --git a/spec/features/visitor/sign_in_with_social_spec.rb b/spec/features/visitor/sign_in_with_social_spec.rb
new file mode 100644
index 00000000..4209fc09
--- /dev/null
+++ b/spec/features/visitor/sign_in_with_social_spec.rb
@@ -0,0 +1,94 @@
+require "rails_helper"
+
+feature "Sign in with social account" do
+  context "when oauth confirmed" do
+    include_context :stub_omniauth
+
+    context "when user found by uid" do
+      let!(:social_profile) { create(:social_profile, user: user) }
+
+      before { click_sign_in_with_fb }
+
+      context "when user confirmed" do
+        let!(:user) { create(:user, :confirmed, :from_auth_hashie) }
+
+        it_behaves_like "success sign in"
+      end
+
+      context "when user not confirmed" do
+        let!(:user) { create(:user, :from_auth_hashie) }
+
+        it_behaves_like "finishing sign up" do
+          let(:name) { user.full_name }
+          let(:email) { "mailer@mail.com" }
+          let(:password) { "123456qwe" }
+        end
+      end
+    end
+
+    context "when user found by email" do
+      context "when user confirmed" do
+        let!(:user) { create(:user, :confirmed, :from_auth_hashie) }
+
+        before { click_sign_in_with_fb }
+
+        it_behaves_like "success sign in"
+      end
+
+      context "when user not confirmed" do
+        let!(:user) { create(:user, :from_auth_hashie) }
+
+        it_behaves_like "finishing sign up" do
+          let(:name) { user.full_name }
+          let(:email) { "mailer@mail.com" }
+          let(:password) { "123456qwe" }
+        end
+      end
+    end
+
+    context "when user not found" do
+      it_behaves_like "finishing sign up" do
+        let(:name) { "Joe Bloggs" }
+        let(:email) { "mailer@mail.com" }
+        let(:password) { "123456qwe" }
+      end
+    end
+  end
+
+  context "when oauth not confirmed" do
+    include_context :stub_not_verified_omniauth
+
+    context "when user found by uid" do
+      let!(:social_profile) { create(:social_profile, user: user) }
+      let!(:user) { create(:user, :confirmed) }
+
+      before { click_sign_in_with_fb }
+
+      it_behaves_like "success sign in"
+    end
+
+    context "when user found by email" do
+      let!(:user) { create(:user, :confirmed, :from_auth_hashie) }
+
+      before { click_sign_in_with_fb }
+
+      scenario "User sees alert message" do
+        expect(page).to have_text("Please, connect your account from profile page.")
+        expect(current_path).to eq(root_path)
+      end
+    end
+
+    context "when user not found" do
+      it_behaves_like "finishing sign up" do
+        let(:name) { "Joe Bloggs" }
+        let(:email) { "mailer@mail.com" }
+        let(:password) { "123456qwe" }
+      end
+    end
+  end
+
+  def click_sign_in_with_fb
+    visit new_user_session_path
+    click_link "Sign in with Facebook"
+  end
+end
diff --git a/spec/interactors/connect_social_profile_spec.rb b/spec/interactors/connect_social_profile_spec.rb
new file mode 100644
index 00000000..de5d56f9
--- /dev/null
+++ b/spec/interactors/connect_social_profile_spec.rb
@@ -0,0 +1,27 @@
+require "rails_helper"
+
+describe ConnectSocialProfile do
+  include_context :auth_hashie
+
+  let(:user_1) { create(:user) }
+  let(:user_2) { create(:user) }
+  let(:service) { described_class.new(user_2, auth_hashie) }
+
+  subject { service.call }
+
+  context "when social_profile exists" do
+    let!(:social_profile) do
+      create(:social_profile, uid: auth_hashie.uid, provider: auth_hashie.provider, user: user_1)
+    end
+
+    it "updates user record" do
+      expect { subject }.to change { social_profile.reload.user }.from(user_1).to(user_2)
+    end
+  end
+
+  context "when social profile not exists" do
+    it "creates related social profile" do
+      expect { subject }.to change { user_2.social_profiles.count }.by(1)
+    end
+  end
+end
diff --git a/spec/interactors/create_user_from_auth_spec.rb b/spec/interactors/create_user_from_auth_spec.rb
new file mode 100644
index 00000000..2ad97d3f
--- /dev/null
+++ b/spec/interactors/create_user_from_auth_spec.rb
@@ -0,0 +1,18 @@
+require "rails_helper"
+
+describe CreateUserFromAuth do
+  include_context :auth_hashie
+
+  let(:user) { User.last }
+  let(:service) { described_class.new(auth_hashie) }
+  let(:sent_emails) { ActionMailer::Base.deliveries.count }
+
+  subject { service.call }
+
+  it "creates new user from auth hash" do
+    expect { subject }.to change { User.count }.by(1)
+    expect(sent_emails).to eq(0)
+    expect(user.email).to eq(auth_hashie.info.email)
+    expect(user.full_name).to eq(auth_hashie.info.name)
+  end
+end
diff --git a/spec/interactors/find_user_by_email_service_spec.rb b/spec/interactors/find_user_by_email_service_spec.rb
new file mode 100644
index 00000000..1523ef11
--- /dev/null
+++ b/spec/interactors/find_user_by_email_service_spec.rb
@@ -0,0 +1,22 @@
+require "rails_helper"
+
+describe FindUserByEmailService do
+  include_context :auth_hashie
+
+  let(:service) { described_class.new(auth_hashie) }
+
+  subject { service.call }
+
+  context "when user not exists" do
+    it { is_expected.to be_nil }
+  end
+
+  context "when user exists" do
+    let!(:user) { create(:user, :from_auth_hashie) }
+
+    it "creates new social_profile" do
+      expect { subject }.to change { user.social_profiles.count }.by(1)
+      expect(subject).to eq(user)
+    end
+  end
+end
diff --git a/spec/interactors/oauth_connect_organizer_spec.rb b/spec/interactors/oauth_connect_organizer_spec.rb
new file mode 100644
index 00000000..3d1aa1e2
--- /dev/null
+++ b/spec/interactors/oauth_connect_organizer_spec.rb
@@ -0,0 +1,47 @@
+require "rails_helper"
+
+describe OauthConnectOrganizer do
+  include_context :auth_hashie
+
+  let(:service) { described_class.new(auth_hashie, user) }
+
+  subject { service.call }
+
+  context "when user confirmed" do
+    let(:user) { create(:user, :confirmed) }
+
+    before do
+      allow(ConnectSocialProfile).to receive_message_chain(:new, :call)
+      service.call
+    end
+
+    it "creates social profile" do
+      expect(ConnectSocialProfile).to have_received(:new).with(user, auth_hashie)
+    end
+  end
+
+  context "when user not confirmed" do
+    let(:user) { create(:user) }
+
+    context "when auth not verified" do
+      include_context :invalid_auth_hashie
+
+      it "raises error" do
+        expect { subject }.to raise_error(AuthVerificationPolicy::OauthError)
+      end
+    end
+
+    context "when auth verified" do
+      before do
+        allow(user).to receive(:confirm)
+        allow(user).to receive(:send_reset_password_instructions)
+        service.call
+      end
+
+      it "confirms user" do
+        expect(user).to have_received(:confirm)
+        expect(user).to have_received(:send_reset_password_instructions)
+      end
+    end
+  end
+end
diff --git a/spec/interactors/unverified_auth_organizer_spec.rb b/spec/interactors/unverified_auth_organizer_spec.rb
new file mode 100644
index 00000000..3ae4eaac
--- /dev/null
+++ b/spec/interactors/unverified_auth_organizer_spec.rb
@@ -0,0 +1,50 @@
+require "rails_helper"
+
+describe UnverifiedAuthOrganizer do
+  include_context :auth_hashie
+
+  let(:service) { described_class.new(auth_hashie) }
+
+  subject { service.user }
+
+  context "when user found by email" do
+    before { create(:user, :from_auth_hashie) }
+
+    it "raises error" do
+      expect { subject }.to raise_error(AuthVerificationPolicy::OauthError)
+    end
+  end
+
+  context "when user found by uid" do
+    let!(:social_profile) { create(:social_profile, provider: auth_hashie.provider, uid: auth_hashie.uid, user: user) }
+
+    let(:emails) { ActionMailer::Base.deliveries }
+
+    context "when user confirmed" do
+      let!(:user) { create(:user, :confirmed, :from_auth_hashie) }
+
+      it "not sends confirmation notification" do
+        expect(emails).to be_empty
+      end
+    end
+
+    context "when user not confirmed" do
+      let!(:user) { create(:user, :from_auth_hashie) }
+      let(:email) { emails.last }
+
+      it "sends confirmation notification" do
+        expect(email.subject).to eq("Confirmation instructions")
+        expect(email.to).to eq([user.email])
+      end
+    end
+  end
+
+  context "when user not found" do
+    let(:user) { User.last }
+
+    it "creates new user from auth_hashie" do
+      expect { subject }.to change { User.count }.by(1)
+      expect(subject).to eq(user)
+    end
+  end
+end
diff --git a/spec/interactors/verified_auth_organizer_spec.rb b/spec/interactors/verified_auth_organizer_spec.rb
new file mode 100644
index 00000000..e498edc2
--- /dev/null
+++ b/spec/interactors/verified_auth_organizer_spec.rb
@@ -0,0 +1,32 @@
+require "rails_helper"
+
+describe VerifiedAuthOrganizer do
+  include_context :auth_hashie
+
+  let(:service) { described_class.new(auth_hashie) }
+
+  subject { service.user }
+
+  context "when social profile exists" do
+    let!(:social_profile) { create(:social_profile, uid: auth_hashie.uid, provider: auth_hashie.provider) }
+
+    it { is_expected.to eq(social_profile.user) }
+  end
+
+  context "when social profile not exists" do
+    context "when user exists" do
+      let!(:user) { create(:user, :from_auth_hashie) }
+
+      it "creates related social profile" do
+        expect { subject }.to change { user.social_profiles.count }.by(1)
+        expect(subject).to eq(user)
+      end
+    end
+
+    context "when user not exists" do
+      it "creates new one" do
+        expect { subject }.to change { User.count }.by(1)
+      end
+    end
+  end
+end
diff --git a/spec/models/social_profile_spec.rb b/spec/models/social_profile_spec.rb
new file mode 100644
index 00000000..c6acfec7
--- /dev/null
+++ b/spec/models/social_profile_spec.rb
@@ -0,0 +1,27 @@
+require "rails_helper"
+
+describe SocialProfile do
+  subject { create(:social_profile, uid: "abc123") }
+
+  it { is_expected.to belong_to :user }
+  it { is_expected.to validate_presence_of :user }
+  it { is_expected.to validate_presence_of :uid }
+  it { is_expected.to validate_presence_of :provider }
+  it { is_expected.to validate_uniqueness_of(:uid).scoped_to(:provider) }
+
+  describe ".from_omniauth" do
+    include_context :auth_hashie
+
+    subject { described_class.from_omniauth(auth_hashie) }
+
+    context "when record exists" do
+      let!(:social_profile) { create(:social_profile, uid: auth_hashie.uid, provider: auth_hashie.provider) }
+
+      it { is_expected.to eq(social_profile) }
+    end
+
+    context "when record not exists" do
+      it { is_expected.to be_nil }
+    end
+  end
+end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 0d1f5ef0..5ca43167 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -2,4 +2,5 @@
 
 describe User do
   it { is_expected.to validate_presence_of :full_name }
+  it { is_expected.to have_many(:social_profiles).dependent(:destroy) }
 end
diff --git a/spec/policies/auth_verification_policy_spec.rb b/spec/policies/auth_verification_policy_spec.rb
new file mode 100644
index 00000000..fb4f6fdf
--- /dev/null
+++ b/spec/policies/auth_verification_policy_spec.rb
@@ -0,0 +1,43 @@
+require "rails_helper"
+
+describe AuthVerificationPolicy do
+  let(:auth) { double(:omniauth, provider: provider) }
+
+  describe ".verified?" do
+    subject { described_class.new(auth).verified? }
+
+    context "when provider is Facebook" do
+      let(:provider) { "facebook" }
+
+      before do
+        allow(auth).to receive_message_chain(:info, :verified?).and_return(true)
+        allow(auth).to receive_message_chain(:extra, :raw_info, :verified?).and_return(true)
+      end
+
+      it "returns corresponding value" do
+        expect(subject).to eq(true)
+      end
+    end
+
+    context "when provider is Google" do
+      let(:provider) { "google_oauth2" }
+
+      before do
+        allow(auth).to receive_message_chain(:extra, :raw_info, :email_verified?).and_return(true)
+      end
+
+      it "returns corresponding value" do
+        expect(subject).to eq(true)
+      end
+    end
+
+    context "when provider is not in the case statement" do
+      let(:provider) { "another" }
+
+      it "raises Exception" do
+        expect { subject }
+          .to raise_error(ArgumentError, I18n.t("omniauth.verification.not_implemented", kind: provider))
+      end
+    end
+  end
+end
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index 7177eac9..4afb59c2 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -6,8 +6,16 @@
 require "shoulda/matchers"
 
 Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
+OmniAuth.config.test_mode = true
 
 RSpec.configure do |config|
   config.use_transactional_fixtures = false
   config.infer_spec_type_from_file_location!
 end
+
+Shoulda::Matchers.configure do |config|
+  config.integrate do |with|
+    with.test_framework :rspec
+    with.library :rails
+  end
+end
diff --git a/spec/support/matchers/have_connected_account.rb b/spec/support/matchers/have_connected_account.rb
new file mode 100644
index 00000000..301f8685
--- /dev/null
+++ b/spec/support/matchers/have_connected_account.rb
@@ -0,0 +1,7 @@
+RSpec::Matchers.define :have_connected_account do |social_profile|
+  match do
+    within ".js-social-profiles" do
+      have_text(social_profile)
+    end
+  end
+end
diff --git a/spec/support/shared_examples/finishing_sign_up.rb b/spec/support/shared_examples/finishing_sign_up.rb
new file mode 100644
index 00000000..368c3d98
--- /dev/null
+++ b/spec/support/shared_examples/finishing_sign_up.rb
@@ -0,0 +1,23 @@
+shared_examples_for "finishing sign up" do
+  before do
+    visit new_user_session_path
+    click_link "Sign in with Facebook"
+  end
+
+  scenario "User finishing registration" do
+    expect(page).to have_text("Finish Signup")
+
+    fill_in :user_email, with: email
+    fill_in :user_password, with: password
+    click_button "Finish Signup"
+
+    open_email(email)
+    expect(current_email).to have_subject("Confirmation instructions")
+    expect(current_email).to have_body_text(name)
+
+    visit_in_email("Confirm my account")
+    expect(page).to have_content("Your email address has been successfully confirmed")
+    expect(page).to have_text(name)
+    expect(page).to have_text(email)
+  end
+end
diff --git a/spec/support/shared_examples/omniauth_stub.rb b/spec/support/shared_examples/omniauth_stub.rb
new file mode 100644
index 00000000..9ab8052f
--- /dev/null
+++ b/spec/support/shared_examples/omniauth_stub.rb
@@ -0,0 +1,89 @@
+require "rails_helper"
+
+shared_context :auth_hashie do
+  let(:auth_hashie) do
+    OmniAuth::AuthHash.new(
+      provider: "facebook",
+      uid: "123545",
+      info: {
+        email: "joe@bloggs.com",
+        name: "Joe Bloggs",
+        verified: true
+      },
+      extra: {
+        raw_info: {
+          email: "joe@bloggs.com",
+          name: "Joe Bloggs",
+          verified: true,
+          email_verified: true
+        }
+      }
+    )
+  end
+end
+
+shared_context :invalid_auth_hashie do
+  let(:auth_hashie) do
+    OmniAuth::AuthHash.new(
+      provider: "facebook",
+      uid: "123545",
+      info: {
+        email: "joe@bloggs.com",
+        name: "Joe Bloggs",
+        verified: false
+      },
+      extra: {
+        raw_info: {
+          email: "joe@bloggs.com",
+          name: "Joe Bloggs",
+          verified: false,
+          email_verified: false
+        }
+      }
+    )
+  end
+end
+
+shared_context :stub_omniauth do
+  background do
+    OmniAuth.config.mock_auth[:facebook] = OmniAuth::AuthHash.new(
+      provider: "facebook",
+      uid: "123545",
+      info: {
+        email: "joe@bloggs.com",
+        name: "Joe Bloggs",
+        verified: true
+      },
+      extra: {
+        raw_info: {
+          email: "joe@bloggs.com",
+          name: "Joe Bloggs",
+          verified: true,
+          email_verified: true
+        }
+      }
+    )
+  end
+end
+
+shared_context :stub_not_verified_omniauth do
+  background do
+    OmniAuth.config.mock_auth[:facebook] = OmniAuth::AuthHash.new(
+      provider: "facebook",
+      uid: "123545",
+      info: {
+        email: "joe@bloggs.com",
+        name: "Joe Bloggs",
+        verified: false
+      },
+      extra: {
+        raw_info: {
+          email: "joe@bloggs.com",
+          name: "Joe Bloggs",
+          verified: false,
+          email_verified: false
+        }
+      }
+    )
+  end
+end
diff --git a/spec/support/shared_examples/success_sign_in.rb b/spec/support/shared_examples/success_sign_in.rb
new file mode 100644
index 00000000..a51f6609
--- /dev/null
+++ b/spec/support/shared_examples/success_sign_in.rb
@@ -0,0 +1,7 @@
+shared_examples_for "success sign in" do
+  scenario "User signs in" do
+    expect(page).to have_text(user.full_name)
+    expect(current_path).to eq(edit_user_registration_path)
+    expect(page).to have_connected_account("Facebook")
+  end
+end