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Redmi demonstrates in-display fingerprint biometrics in smartphone with LCD screen

Redmi demonstrates in-display fingerprint biometrics in smartphone with LCD screen

The structure of LCD panels has prevented under-display fingerprint sensors from being integrated into some mobile devices, but the new Redmi Note 8 Pro appears to have found a way to implement the biometric technology, according to GSMArena.

The backlight module found in LCD mobile devices has previously been found to interfere with optical fingerprint sensors, but GSMArena also reports that Chinese company Fortsense claimed in marketing materials seen a year ago that it had developed technology to make a biometric fingerprint system, which appears to be optical, work under an LCD screen. The system uses an innovative membrane to allow light to pass through.

Redmi Brand Manager Lu Weibing announced the implementation and demonstrated it on a prototype device. He says an infrared high-transmittance film material allows the image to reach the sensor.

GSMArena suggests that the technology’s development likely comes to late for deployment to the Redmi Note 9 or the Redmi K30 Pro, but could reach other devices from the company this year.

In-display fingerprint sensors have been implemented in numerous smartphones, but not in as many of the low-end and mid-range devices that typically include LCD screens. Even in OLED devices, in-display fingerprint scanning has not been without challenges.

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