Security & Privacy

Security & Privacy 🔒

GhostPaper OS is designed with privacy and security in mind, providing a standalone environment that does not require cloud accounts while offering local hardware protection.

🔢 The 6-Digit PIN System

On the very first boot, the system will prompt you to Setup Security.

• PIN Length: A strict 6-digit numeric code.
• Storage: The PIN is stored in the ESP32's Non-Volatile Storage (NVS) under the vellum namespace. It persists even if the battery dies or the SD card is removed.
• Auto-Lock: The PIN screen (Privacy Screen) appears:
  • Immediately upon cold boot.
  • Upon waking from Deep Sleep.
  • After 5 minutes of inactivity (Auto-lock).

🛡️ Hardware Touch Lock

Sometimes you want to prevent accidental page turns while holding the device.

• Activation: Long-press the IO21 button (top button) for 2 seconds.
• Visual Feedback: A [LOCKED] indicator will appear in the system header.
• Function: This completely disables the GT911 touch interrupt logic. The screen will still display content, but touch inputs will be ignored.
• Deactivation: Long-press the IO21 button again to restore touch functionality.

🕵️ Privacy Principles

• No Cloud Dependency: Your reading habits, library, and PIN never leave the device.
• Local Analytics: Any reading progress or preferences are stored locally on your SD card or internal NVS.
• Offline First: The device only uses WiFi when you explicitly trigger Sync or Store. At all other times, the WiFi radio is powered down to save battery and ensure privacy.