3 ms·

"The camera is not disconnected in hardware, because its field of view is completely obstructed with the lid closed". How long until someone realizes audio dat

• InitialLastName 7y ago
  Source? Not because I disbelieve that it's possible in practice, but how much data can you really get out of that? A MacBook Pro camera operates at 60 Hz; unless you can interpolate samples some way I'm not thinking of (and that would necessarily degrade your resolution), the highest frequency you can capture is 30 Hz. Technically, this could be extracting audio, but it's not audio that meaningfully overlaps with the human experience.
  • z5h 7y ago
    No source, but there’s just been such a long history of side channel attacks, and similar research (https://nofilmschool.com/2014/08/mit-extract-sound-audio-silent-video-picture-information https://nofilmschool.com/2014/08/mit-extract-sound-audio-sil...) that it makes one wonder if a non-hardware disconnect fix is sufficient.
    • ricardobeat 7y ago
      > high-speed camera that captured 2,000 to 6,000 frames per second
      • z5h 7y ago
        Literally the next lines > In other experiments, however, they used an ordinary digital camera. Because of a quirk in the design of most cameras’ sensors, the researchers were able to infer information about high-frequency vibrations even from video recorded at a standard 60 frames per second.