Having an in-display fingerprint sensor is now a common flagship phone feature, and besides looking cool, it offers some practical benefits. Placing the sensor under the display saves real estate and allows for all-screen devices without sacrificing security or convenience. This technology is normally seen in flagship devices not only because it is more advanced, but also because it requires an OLED screen to work, and OLED displays are still expensive.
Now Redmi demonstrates a solution to adding an in-display fingerprint reader to a phone with an LCD display. It is based on an innovative ...
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