The same goes with the face recognition feature of MIUI biometrics, but without the use of LED transmitters and the touch screen. This data is then compared with the data already stored on the device to see if it’s a match and if MIUI biometric should unlock the device or not. Xiaomi’s latest patent for an in-diplay fingerprint scanner When a finger is placed in that region of the screen, the capacitive touch screen layer will detect the finger’s placement and then the infrared LED transmitters in that area will light up and capture the fingerprint data.
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