Samsung Galaxy S6 Edge - Manual (Page 114)

Settings
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3
Lift your finger when the device vibrates, and then place it on the Home key again.
Repeat this action using the same finger until the fingerprint is registered.
4
When a screen appears requesting to register a backup password, enter the backup
password, and then tap CONTINUE.
5
Enter the backup password again to verify it, and then tap OK.
You can use the backup password instead of scanning your fingerprints.
6
When a fingerprint lock pop-up window appears, tap OK. You can use your fingerprints to
unlock the screen.
Deleting fingerprints
You can delete registered fingerprints using the fingerprint manager.
1
On the Settings screen, tap Lock screen and security → Fingerprint.
2
Scan a registered fingerprint, or tap BACKUP PASSWORD and enter the backup
password.
3
Tap EDIT.
4
Tick fingerprints to delete and tap REMOVE.