Samsung SM-A505W User Manual page 183

Settings
3
Register your fingerprint.
Place your finger on the fingerprint recognition sensor at the bottom of the screen. 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.
4
When you are finished registering your fingerprints, tap Done.
Deleting registered fingerprints
You can delete registered fingerprints.
1
On the Settings screen, tap Biometrics and security → Fingerprints.
2
Unlock the screen using the preset screen lock method.
3
Select a fingerprint to delete and tap Remove → Remove.
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