The problem is actually much bigger than you think. Each key on a keyboard has a unique sound and it can be used to figure out what you are typing, no webcam required.
https://www.berkeley.edu/news/media/releases/2005/09/14_key.shtml On Thu, Jun 4, 2020 at 2:28 PM Keith Lofstrom <[email protected]> wrote: > The computer my wife uses for net meetings and patient > e-visits has a camera with a field of view limited to > her head and shoulders, and a simple curtain behind. > > I wonder how many user cameras have a wide enough field > to show arm movements, or (horrors!) the keyboard and > mouse themselves? > > Do keyboard clicks show up in the audio, and can those > be timed to estimate which keys are pressed? 340 m/s > divided by 44 kHz is 8 millimeters; fingers and hands > move much more slowly than sound. > > I don't know, but this could be a security hole worth > investigating. Perhaps fat consulting gigs for those > who develop marketable expertise. > > Keith > > -- > Keith Lofstrom [email protected] > _______________________________________________ > PLUG mailing list > [email protected] > http://lists.pdxlinux.org/mailman/listinfo/plug > _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
