Samsung SM-G950W User Manual page 185

Settings
3
Place your finger on the fingerprint recognition sensor.
4
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. When you are finished registering
your fingerprints, tap DONE.
When a fingerprint lock pop-up window appears, tap TURN ON to use your fingerprint to
unlock the screen.
Deleting fingerprints
You can delete registered fingerprints.
1
On the Settings screen, tap Lock screen and security → Fingerprint Scanner.
2
Unlock the screen using the preset screen lock method.
3
Tap EDIT.
4
Tick fingerprints to delete and tap REMOVE.
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