Samsung SM-A057M User Manual page 96

Settings
The Side button has a built-in fingerprint recognition sensor. Ensure that the
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fingerprint recognition sensor is not scratched or damaged by metal objects, such as
coins, keys, and necklaces.
Covering the fingerprint recognition sensor with accessories, such as stickers, may
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decrease the fingerprint recognition rate.
Ensure that the fingerprint recognition sensor and your fingers are clean and dry.
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If you bend your finger or use a fingertip, the device may not recognize your
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fingerprints. Make sure to cover the entire fingerprint recognition sensor with your
finger.
Registering fingerprints
On the Settings screen, tap Security and privacy → Biometrics → Fingerprints and
follow the on-screen instructions to register your fingerprint. After registering, you
can check whether your fingerprint is registered and its name by tapping Check added
fingerprints.
Unlocking the screen with your fingerprints
You can unlock the screen with your fingerprint instead of using a pattern, PIN, or
password.
1
On the Settings screen, tap Security and privacy → Biometrics → Fingerprints.
2
Unlock the screen using the preset screen lock method.
3
Tap the Fingerprint unlock switch to turn it on.
4
On the locked screen, place your finger on the fingerprint recognition sensor and scan
your fingerprint.
Deleting registered fingerprints
You can delete registered fingerprints.
1
On the Settings screen, tap Security and privacy → Biometrics → Fingerprints.
2
Unlock the screen using the preset screen lock method.
3
Select a fingerprint to delete and tap Remove.
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