Who needs face unlock when you could just tap out a private ditty on your smartphone? Maybe you'd risk giving away your credentials to any vaguely rhythmic phone thief within ten feet, but RIM's engineers have a patent-approved answer to that: Rather than just sensing rhythm, they reckon a phone's accelerometer could also detect the magnitude and location of each tap, which would make it harder for eavesdroppers to mimic. Just don't pick something too syncopated -- not unless you're this guy.
BlackBerry phones could get rhythm-to-unlock, like dun-da-da-dun-dun
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