Samsung Galaxy A30S User Manual page 140

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.
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