Samsung SM-A256E/N User Manual page 112

Settings
For better fingerprint recognition
When you scan your fingerprints on the device, be aware of the following conditions that
may affect the feature's performance:
The device may not recognize fingerprints that are affected by wrinkles or scars.
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The device may not recognize fingerprints from small or thin fingers.
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To improve recognition performance, register the fingerprints of the fingers used
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most often to perform tasks on the device.
The Side button has a built-in fingerprint recognition sensor. Ensure that the
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fingerprint recognition sensor is not scratched or damaged by metal objects, such as
coins, keys, and necklaces.
Covering the fingerprint recognition sensor with accessories, such as stickers, may
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decrease the fingerprint recognition rate.
Ensure that the fingerprint recognition sensor and your fingers are clean and dry.
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If you bend your finger or use a fingertip, the device may not recognize your
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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
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feature in dry environments or before using the feature, discharge static electricity
by touching a metal object.
Registering fingerprints
On the Settings screen, tap Security and privacy → Biometrics → Fingerprints and
follow the on-screen instructions to register your fingerprint. After registering, you
can check whether your fingerprint is registered and its name by tapping Check added
fingerprints.
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