Samsung SM-A115F/DS User Manual page 23

Basics
• Covering the fingerprint recognition sensor with protective films, stickers, or other
accessories may decrease the fingerprint recognition rate. If the fingerprint recognition
sensor is initially covered with a protective film, remove it before using the fingerprint
recognition sensor.
• Ensure that the fingerprint recognition sensor and your fingers are clean and dry.
• If you bend your finger or use a fingertip, the device may not recognise your fingerprints.
Make sure to cover the entire fingerprint recognition sensor with your finger.
• In dry environments, static electricity can build up in the device. Avoid using this feature
in dry environments or before using the feature, discharge static electricity by touching a
metal object.
Registering fingerprints
1
Launch the Settings app and tap Biometrics and security → Fingerprints.
2
Read the on-screen instructions and tap Continue.
3
Set a screen lock method.
4
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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