https://wccftech.com/apple-is-working-on-an-enhanced-under-display-touch-id-system-for-the-iphone/

The iPhone 13 is still months away from being announced and details on the handset's upcoming features keep pouring in. Other than this, Apple is keen to experiment with new technology for future products. In the past few months, we have heard that Apple is working on an under-display fingerprint scanner for the iPhone. While it is not certain whether the iPhone 13 will feature Touch ID or not, all the leaks and rumors point that there will be. Now, a new patent has been granted to Apple that highlights an "enhanced" under-display Touch ID system potentially for the iPhone 13.

As mentioned earlier, Apple has been granted a new patent by the United States Patent and Trademark Office that shares details on a unique Touch ID system that can potentially be used on the forthcoming iPhone 13. The patent details a system that will detect light through the screen of the iPhone and can be used for Touch ID  as well as Face ID. The patent is titled "Under-display fingerprint sensing based on off-axis angular light" where the company details using light instead of ultrasonic vibrations to sense fingerprints.