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Huawei has applied a patent for “a method for unlocking a display screen and its device”. The summary shows that this method obtains the user’s current pupil parameters and the reflected light intensity of the face through the camera module when the screen is locked and the screen is bright.
If the current pupil parameters are greater than the face unlocked pupil parameters, the user If it is determined that the user is currently in a coercive state according to the micro-expression, a preset unlocking interface is displayed, and the preset unlocking interface includes at least one of password unlocking, fingerprint unlocking, iris unlocking, voice unlocking, and sonic unlocking.
This patent can prevent the user from unlocking the display screen of the electronic device through the face when under duress.
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