Jessica Dolcourt / CNET:

Qualcomm announces 3D Sonic Sensor, a new under-display fingerprint sensor for smartphones that uses sound waves to map fingerprints  —  After years of prototypes and fine-tuning, Qualcomm on Tuesday finally announced a fingerprint reader that uses sound to unlock your phone.

Qualcomm announces 3D Sonic Sensor, a new under-display fingerprint sensor for smartphones that uses sound waves to map fingerprints (Jessica Dolcourt/CNET)
Source: Tech Meme