Samsung Galaxy S23 User Manual page 144

Settings
Your device has a built-in fingerprint recognition sensor at the bottom centre of
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the screen. Ensure that the screen protector or the touch screen on the fingerprint
recognition sensor area is not scratched or damaged by objects, such as coins, keys,
pens, and necklaces.
Ensure that the fingerprint recognition sensor area at the bottom centre of the
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screen and your fingers are clean and dry.
If you bend your finger or use a fingertip, the device may not recognize your
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fingerprints. Press the screen so that your fingertip spreads over the wide surface of
the fingerprint recognition area.
Registering fingerprints
1
On the Settings screen, tap Security and privacy → Biometrics → Fingerprints.
2
Read the on-screen instructions and tap Continue.
3
Set a screen lock method.
4
Tap Register and place your finger on the fingerprint recognition sensor. 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.
5
When you are finished registering your fingerprints, tap Done.
You can check whether your fingerprint is registered by tapping Check added
fingerprints.
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