Unlike the fingerprint sensor, facial recognition is somewhat problematic because, unlike fingerprints, our appearance can vary from day to day, and whether it's a three-day beard, glasses, hat, body jewelry, or other accessories, they can cause facial recognition to fail.
To counteract this we can add an alternative look.
- Open the Settings
- Tap on Biometrics and security
- Tap on Face recognition
- Enter PIN/Pattern/Password
- Tap on Add alternative look
- Tap on Continue