AU Optronics is demonstrating its new under-the-OLED fingerprint sensor, which it says is the world's largest size sensor at 2.9-inch.

A larger sensor is useful as it makes it easier for the user to sign-in, and it also enables support for multi-fingerprint identification for biometrics security. The sensor features high-resolution (1,000 PPI) suitable for detection of small child fingerprints and also includes a heart-rate sensor for added security.

AUO plans to introduce this sensor later in 2021.

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