Samsung SM-A305F User Manual page 149

Settings
Registering fingerprints
On the Settings screen, tap Biometrics and security → Fingerprints.
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Unlock the screen using the preset screen lock method.
If you have not set a screen lock method, create one.
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Place your finger on the fingerprint recognition sensor. After the device detects your
finger, lift it up and place it on the fingerprint recognition sensor again.
Repeat this action until the fingerprint is registered.
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When you are finished registering your fingerprints, tap Done.
Deleting registered fingerprints
You can delete registered fingerprints.
On the Settings screen, tap Biometrics and security → Fingerprints.
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Unlock the screen using the preset screen lock method.
Select a fingerprint to delete and tap Remove → Remove.
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