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A comment on This $200 3D printed bot can crack your phone's PIN in 20 hours. Parent comment

Re:This $200 3D printed bot can crack your phone's PIN in 20... by guard-of-terra on Friday July 26, 2013 @01:54PM (#6109487)
Pattern unlock leaves a body fat trail on the screen that is trivial NOT to see & exploit.
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Re:This $200 3D printed bot can crack your phone's PIN in 20... by pigscantfly on Friday July 26, 2013 @06:26PM (#6110946)
Exactly - if you hold my phone up to a light, you can easily see my unlock pattern in the fingerprints left on the screen.
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