In the new Galaxy S10 flagships, Samsung uses under-screen fingerprint scanners, but not optical ones.
How he did it
The owner of the Galaxy S10 sweated a lot before...check your diagram. First, he photographed his imprint on the glass, and then processed the resulting image in Photoshop and 3DS Max. He printed the resulting model on an AnyCubic Photon LCD printer. After two unsuccessful attempts, the smartphone recognized the fingerprint and unlocked.
The user recorded all his actions on video.
Of course, in life it’s unlikely that anyone will be like thisbothering to unlock someone else's smartphone is not the plot of the Mission: Impossible movie. However, such an experiment showed that an ultrasound scanner is not ideal and is not 100% safe.
However, it is still far from Face ID technology. Let us remind you that Apple smartphones were “hacked” by the twins, even with the help of an ordinary mask.