However, there is no clear information whether it will be a physical button or the virtual button with ultrasonic fingerprint sensor. (phoneradar.com)
The sensor, as it turns out, is the latest ultrasonic fingerprint sensor from Qualcomm that now works through OLED display stacks up to 1.2 mm thick, up to 0.8 mm of cover glass, or up to 0.65 mm of aluminum (an increase from 0.4 mm for both glass or metal). (theverge.com)
Qualcomm has announced its next generation of ultrasonic fingerprint sensors during Mobile World Congress Shanghai. (ibtimes.com)