Heat traces left by fingers can reveal your smartphone PIN

Criminals can extract a smartphone PIN directly from the screen using the heat signature left by a user’s fingers, warns new research.

A team of computer scientists from the University of Stuttgart and Ludwig Maximillian University has shown that thermal imaging techniques can reveal which parts of the screen were tapped or swiped, even if the device is left untouched for 30 seconds.

The research paperStay Cool! Understanding Thermal Attacks on Mobile-based User Authentication, which will be presented at an upcoming conference in the U.S., explains how this new threat to user privacy on mobile devices has emerged as thermal cameras become more ubiquitous and affordable. …

Source: Heat traces left by fingers can reveal your smartphone PIN

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