Google could solve your fingerprint scanner issues with the Pixel 9

Google’s upcoming Pixel 9 lineup will feature a faster, more reliable ultrasonic fingerprint reader, according to Android Authority. It would replace the optical under-display fingerprint sensor that Google introduced in the Pixel 6 with newer technology capable of reading even wet or oily fingerprints.

The switch can also address some of widespread problems that users have experienced when trying to unlock their Pixel devices, with some people saying that light levels and finger dryness can affect the reliability of the previous optical reader. Optical scanners are the oldest method of reading fingerprints. They work by shining light against the user’s finger and then visually detecting patterns and grooves in the surface – meaning any changes, such as dirt or smudges, can interfere with the process.

On the other hand, ultrasonic sensors read fingerprints with greater accuracy by reflecting ultrasonic pulses off them, which also prevents users from going blind if they need to unlock their phones at night. According to reliable leaker Kamila Wojciechowska, the Pixel 9 will use Qualcomm’s 3D Sonic Gen 2 (QFS4008), the same model found in the Samsung Galaxy S24 Ultra.