The ultrasonic fingerprint scanner feature in the Samsung Galaxy S10 can be duped into unlocking the device with the help of a 3D printed fingerprint stolen from its owner as shown by Reddit user darkshark9.
According to Samsung’s description, to use the in-screen fingerprint scanner one only has to “Simply touch the glass to unlock. We’ve moved security from the back of the phone to the front, fusing the Ultrasonic Fingerprint directly into the screen.”
Source: BleepingComputer