3 ms·

With the idea of heat in general: https://thehackernews.com/2015/03/hacking-air-gapped-computer.html https://thehackernews.com/2015/03/hacking-air-gapped-comput

• javajosh 5y ago
  Interesting. They estimate 8 bits per hour, and are only doing bidirectional. I bet it's more like 16 bits per hour for exfil only, and with a much better range with an infrared sensor (which, interestingly, can be created by carefully scraping off the microlenses from an ordinary CCD, I recently learned).
  • blincoln 5y ago
    That's a much shorter wavelength part of the spectrum than thermal imagers operate in, even though it's also infrared. CCDs pick up the kind of infrared that IR remote controls use.