Security settings (device lock, not app PIN)

The old app-PIN model is gone. RepairNode now relies on the phone or tablet's own authentication layer: biometrics when available, or the device credential and screen lock fallback supported by the operating system.

Turning device lock on

• Open Settings → App Settings → the Security section.
• Turn Device Lock on only after the phone already has a supported screen lock, fingerprint, face unlock, or device credential configured.
• The Security section also shows Available Methods so you can see what the device reports back to RepairNode.
• The same device-lock preference can be chosen during onboarding before the first normal app unlock.

Re-lock timing

• RepairNode stores a prompt policy instead of hardcoding one unlock interval.
• Current options are launch only, every background exit, after 1 minute, after 5 minutes, or after 15 minutes.
• Existing installs default to 5 minutes unless the user changes the policy.
• Turning device lock off requires a fresh successful device-auth check first.

Recovery phrase protection

When device lock is enabled and local authentication is available, viewing the encrypted-backup recovery phrase also requires device authentication. That keeps backup secrets behind the same protection layer used for app unlock.