How do I lock WitnessWork with Face ID or Touch ID?

Open Settings → Security and turn on Require Face ID (Require Touch ID or Require Passcode on devices without Face ID; Require Biometric Unlock on Android). WitnessWork asks you to confirm it's you before it turns on. From then on, WitnessWork asks you to unlock it every time it opens. Use Require to choose whether it asks again as soon as you leave the app, or only after 1, 5, or 15 minutes away. If Face ID, Touch ID, or your fingerprint isn't recognized, use your device passcode, PIN, pattern, or password instead. The lock is on this device only: it isn't synced, saved in backups, or sent anywhere, so turn it on separately on each device. Your device needs a passcode, or on Android a screen lock (PIN, pattern, or password); if your Android device has none, tap Open Settings when WitnessWork asks, set one up, then turn the lock on again. If you remove it later, WitnessWork opens without asking. While the lock is on, the app switcher (Recents on Android) shows a blank card instead of WitnessWork's screen; on Android, this needs Android 13 or later. The lock covers the app itself; widgets, Live Activities, notifications, Siri, and your watch still show what they normally do. Messages, celebrations, and Update Required wait until you unlock, and a reminder, widget, or link you tap while WitnessWork is locked opens once you unlock. To turn it off, open Settings → Security, turn the switch off, and confirm it's you. If unlocking keeps failing, check that your device passcode works on the lock screen, then force-quit and reopen WitnessWork. For other problems, use the Help Center's private support link and keep personal details out of public reports.