https://wccftech.com/oneplus-6t-in-screen-fingerprint-gets-faster-with-time/

The OnePlus 6T is one of the few phones on the market with an in-display fingerprint scanner, but some users had complained that it isn’t as fast as the physical sensors on the older OnePlus smartphones. However, with an unlock time of .34 of a second, it isn’t bad and according to the company’s software engineer Yale Liu, it will get even faster over time.

Dubbed Screen Unlock by OnePlus, the in-display fingerprint scanner recognizes fingerprints using a green light. The data read by the sensor is compared to the data stored in the phone to authenticate logins. Thanks to the phone’s sophisticated algorithms, it will get faster and more accurate over time. Whenever the user unlocks the phone, the scanner stores areas of the fingerprint that were missed during the initial registration process.