Huawei
Add a New Fingerprint auf Huawei
Huawei phones can store more than one fingerprint at the same time. That lets you unlock the device with either thumb, or register a finger for someone else who regularly uses the phone.
The fingerprint sensor itself does not decide which fingers are recognized. That happens inside the Biometrics and password menu, where every registered fingerprint appears as a separate entry that can later be renamed or deleted.
To add another fingerprint, open Settings ➔ Biometrics & password ➔ Fingerprint ID ➔ Fingerprint management ➔ New fingerprint. Then press the sensor and lift your finger repeatedly, following the on-screen prompts until the scan completes.
If the sensor keeps rejecting the finger, clean both the sensor and your finger first, then try a slightly different angle on the next attempt. A cracked or thick screen protector over the sensor area can also cause repeated failures and usually needs to be replaced before scanning works reliably.