One of the most talked technologies in the past months is the screen-embedded fingerprint scanner. Apple and Samsung were expected to unveil this new tech first, but Qualcomm and Vivo brought it first at MWC Shanghai 2017.
The sensor technology is developed by Qualcomm and Vivo offered its support for this project so they prepared a special model that they brought it to the expo. Bellow you can see how it work.
Bellow, you can find another video posted by Vivo itself showing how the concept works.