Smartphone Security Vulnerable to Touch-Screen Smudges, Researchers Report

Just like the old “Check the security keypad buttons for wear” trick:

Security researchers from the University of Pennsylvania have highlighted a potential attack vector for accessing your mobile devices–the smudges from your fingertips.

In a paper (PDF) presented this week at the USENIX Security Symposium in Washington, D.C., the researchers revealed that oily residues on the surface of touch screens used on devices such as smartphones can be used to infer passwords.

via Smartphone Security Vulnerable to Touch-Screen Smudges, Researchers Report – Security from eWeek.

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