Samsung SM-F700F/DS User Manual page 188

Settings
4
Place your finger on the Side key. After the device detects your finger, lift it up and place
it on the Side key again.
Repeat this action until the fingerprint is registered.
5
When you are finished registering your fingerprints, tap Done.
Checking registered fingerprints
You can check whether your fingerprint is registered by placing your finger on the fingerprint
recognition sensor.
1
On the Settings screen, tap Biometrics and security → Fingerprints.
2
Unlock the screen using the preset screen lock method.
3
Tap Check added fingerprints.
4
Place your finger on the fingerprint recognition sensor.
The recognition result will be displayed.
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