Samsung SM-J610FN/DS User Manual page 126

Settings
Registering your face
For better face registration, register your face indoors and out of direct sunlight.
On the Settings screen, tap Biometrics and security → Face recognition.
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Read the on-screen instructions and tap Continue.
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Set a screen lock method.
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Select whether you are wearing glasses or not and tap Continue.
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Hold the device with the screen facing towards you and look at the screen.
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Position your face inside the frame on the screen.
The camera will scan your face.
• If unlocking the screen with your face is not working properly, tap Remove face
data to remove your registered face and register your face again.
• To enhance the face recognition, tap Add alternative look and add an alternate
appearance.
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