They could record the sound of the keypresses too. They may be impossible to dis... | Hacker News

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		pygy on June 23, 2009 \| parent \| context \| favorite \| on: Stop Password Masking They could record the sound of the keypresses too. They may be impossible to discriminate subjectively, but they all have a distinct signature...

mgj on June 23, 2009 [–]

Yep, see: http://www.cs.berkeley.edu/~zf/papers/keyboard-ccs05.pdf

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