Samsung Galaxy S9 User Manual page 222

Settings
3
Swipe your finger downwards over the fingerprint recognition sensor.
Repeat this action until the fingerprint is registered. When you are finished registering
your fingerprints, tap DONE.
When a fingerprint lock screen appears, tap TURN ON to use your fingerprint to unlock
the screen.
Deleting registered 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.
Using fingerprints to sign in to accounts
You can use your fingerprints to sign in to webpages that support password saving.
This feature is only available for webpages that you access via the Internet app.
1
On the Settings screen, tap Lock screen and security → Fingerprint Scanner.
2
Unlock the screen using the preset screen lock method.
3
Tap the Web sign-in switch to activate it.
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