Every under-display fingerprint phones could suffer from Samsung S10 / Note 10 issue
 

The optical sensor as vulnerable as ultrasonic

There has been some coverage over the under-display fingerprint with Samsung S10 / Note 10 issue. Samsung officially stated:

"This issue involved ultrasonic fingerprint sensors unlocking devices after recognizing 3-dimensional patterns appearing on certain silicone screen protecting cases as users’ fingerprints.”


Samsung has just released a fix globally on Friday, and more importantly, we have learned that the issue could affect every single under-display fingerprint phone, whether optical or ultra-sonic.
Samsung released a fix and patch

Samsung has released a patch to makes it's an under-display ultrasonic fingerprint sensor, and the patch is focusing on detecting these silicone gel dotted patterns in an ultrasonic fingerprint sensor.

The patch will likely ask you to register your fingers again, and in case it detects silicone gel patterns specifics for unlicensed affordable screen protectors, it simply won’t let you register the fingerprint.

https://fudzilla.com/news/mobile/496...-note-10-issue