In-display fingerprint scanners are already becoming increasingly common but, according to Xiaomi, pretty soon they could become a standard feature on all smartphones.
As things stand, both optical and ultrasonic in-display fingerprint sensors are mostly limited to premium devices. The reason for this is that, in their current form, the scanners are incompatible with the LCD displays found on cheaper devices and instead work only with the more expensive OLED panels found in flagship smartphones.
Recently, though, a company called Fortsense successfully created an in-screen ...
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