don’t even need a keylogger…

research teams from LASEC (Ecole Polytechnique Federale de Lausanne) and Inverse Path have taken a close look at the electromagnetic radiation that is generated every time a computer keyboard is tapped. take a look at COMPROMISING ELECTROMAGNETIC EMANATIONS OF WIRED AND WIRELESS KEYBOARDS. There are other good articles at LASEC. This one gives an overview of various user-aided message authentication protocols and their applications.

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