Researchers reportedly discovered a new side-channel attack that can swipe someone’s fingerprints from sounds made when a finger swipes across a touchscreen.

Toms Hardware reported that researchers from institutions in China and the United States outlined an innovative attack targeting biometric security in a paper titled “PrintListener: Uncovering the Vulnerability of Fingerprint Authentication via the Finger Friction Sound.” 

The attack uses the audio characteristics of a finger gliding across a touchscreen to infer attributes of the fingerprint pattern.

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