Academic researchers have found a new way to determine the passcodes used on smartphones and tablets. The technique they describe in a recent paper relies on the microphones found in most handheld devices to detect the sound waves users generate when they tap on their screens. The technique they created was able to guess nearly three-fourths of the four-digit PINs used within 10 tries in one test. Visit Business Insider's homepage for more stories. Hackers may be able to figure out the...
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