Security Lock

Security Lock is NodeAuth's "app-level gatekeeper," preventing others from snooping on your data if your phone is left unlocked.

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🔢 6-Digit PIN

This is the most common locking method:

1. Enable it in "Security Center" -> "Security Lock".
2. Set a 6-digit numeric password.
3. Hashing Strategy: The system performs 100,000 PBKDF2 iterations locally to hash the PIN, providing physical defense against brute-force attacks.
4. Haptic Feedback: If the input is incorrect, your phone will notify you with a 0.4s shake animation and a physical vibration.

👆 Biometric Unlock (Local)

If your device supports fingerprint, face recognition, or under-display fingerprinting:

• Once the PIN is enabled, you can check "Biometric Quick Entry".
• Instant Access: 300ms after entering the app, the system biometric recognition will be triggered automatically, eliminating the need for manual numeric entry.

⏲️ Auto-Lock Delay

You can customize when the lock is triggered:

• Immediate: Lock as soon as you switch browser tabs or move the app to the background.
• Idle Lock: e.g., Set to "Lock after 5 minutes".

☢️ Nuclear Logout (Reset)

If you forget your PIN, there is a hidden option on the lock screen: tap 5 times to trigger a "Nuclear Logout".

• Consequences: This will physically erase all local cached data on the device, including the enc_device_salt (core encryption salt), bio_cred_id (biometric credential), and all LocalStorage records. You will need to log in again and resync your data online.