Audience: Mobile app users (iOS / Android with biometric
hardware).

Short answer: After your first email-and-password sign-in, the
app remembers you. The next time you open it (or come back after a
period of inactivity), the system Face ID / Touch ID prompt
appears — confirm and you're straight into the app, no credentials
to re-type. Falls back to your device passcode if biometric isn't
available or fails.

Step-by-step (first time on a new install)

1. Open the app and sign in with email + password.
2. The app stores your credentials securely on the device. There
   is no separate "enable biometric" toggle — if your device
   has Face ID / Touch ID enrolled, it'll be used automatically
   from now on.

Subsequent launches

1. Open the app.
2. The native iOS / Android prompt appears with the message
   "Verify to access The Paintball Network."
3. Confirm with Face ID / Touch ID. Or tap Use Passcode to
   fall back to your device passcode.
4. Success → you land in the app. No credential re-entry.

If biometric fails

You'll see a lock screen showing:

• The TPN logo
• A 🔒 icon
• "Authentication required"
• An UNLOCK WITH FACE ID / TOUCH ID button — tap it to retry.

If retry keeps failing (e.g. your face is in the dark or the
sensor is dirty), the device passcode fallback inside the prompt
still works.

What changed in 2026-04-22

Before that release, biometric on iOS only unlocked the screen —
it didn't actually sign you back in. After it succeeded you still
had to type your email and password. The current release makes
biometric an actual sign-in: success → app session re-established
behind the scenes, no credential re-entry.

Notes / gotchas

• No opt-in step. Once you sign in once, biometric becomes the
  default unlock from then on (assuming your device supports it).
• Inactivity re-lock. If you background the app and come back
  after a while, the lock screen returns and biometric prompts
  again. This is intentional — short-term backgrounding (under
  the inactivity threshold) doesn't re-prompt.
• Changing your password elsewhere invalidates the saved
  credentials — biometric will fail until you sign in again with
  the new password.
• Cancel vs fail. Cancelling the prompt leaves you on the lock
  screen (tap UNLOCK to retry). Repeated biometric failure also
  leaves you on the lock screen.
• No biometric hardware? The unlock button just says
  UNLOCK and the app falls back to the regular sign-in flow.

Video

• File: videos/24-face-id.mp4 (to be recorded)
• Suggested length: 30–45 seconds
• Suggested script:
  1. Fresh app sign-in with email + password (10s)
  2. Force-quit the app, reopen — native Face ID prompt with
  "Verify to access The Paintball Network" appears (10s)
  3. Confirm Face ID, land in the app (5s)
  4. Background the app, wait past inactivity threshold, return —
  show lock screen + UNLOCK button (10s)
  5. Cancel a Face ID prompt to show the lock screen retry path
  (5s)