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Someone managed to trick the ultrasonic fingerprint reader into the Samsung Galaxy S10 by taking a photo of his fingerprint on a wineglass, and then creating a 3D molded footprint. The photo was processed in Photoshop and a 3D version was created with Audodesk 3ds Max, which was then printed.
That in itself was not new, since Qualcomm did not pretend that their readers should not be fooled in this way. The Qualcomm player that Samsung has integrated into the Galaxy S10 and the S10 Plus should be able to read the blood flow in the finger and thus prevent hackers from penetrating using fingerprints.
The risk in practice is of course supposed to be minimal, but fingerprint readers with state-of-the-art technology can be easily circumvented.
Our ultrasonic sensor for fingerprint recognition can detect blood flow in the finger and prevent hackers from spoofing the device with a photo or a mold. This extra protection is called anti-spoofing. It takes additional information from the fingerprint and makes this solution unique compared to traditional optical solutions.
Pulse reading also leads to better performance than optical biometric passwords in a wide variety of conditions and contaminants, including when the finger is wet or dirty. – Qualcomm
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