When the touch-sensors on phones capture your fingerprint, they're really only taking a low-resolution, partial snapshot and loosely matching it to a stored image -- which is how a research team from MSU and NYU were able to synthesize their Masterprints ("a fingerprint that serendipitously matches a certain proportion of the fingerprint population"), which drastically reduce the space of possible "guesses" that an attacker has to make to unlock a phone or other device. (more…)
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