system-bus-radio VS org.quietmodem.Quiet

As opposed to AM: https://fulldecent.github.io/system-bus-radio/

https://github.com/fulldecent/system-bus-radio (out)

here is an example: https://fulldecent.github.io/system-bus-radio/

https://fulldecent.github.io/system-bus-radio/ - Tested on MacBook Air / Chrome with AM tuner at 1560 kHz. See field reports for other equipment and frequencies.

Probably because to get this stuff to work is really hard in practice.

Several years ago, we were playing with https://github.com/fulldecent/system-bus-radio to work, but we couldn't, even though we had the right MacBooks.

Have you gone fully paranoid and your air-gaped system is in a Faraday cage inside an anechoic chamber? Things like bus radio [1], coil whine and power fluctuations can be used (it has been shown) to exfiltrate data.

[1] https://github.com/fulldecent/system-bus-radio

The app, which decodes the sound into data, is built around the Quiet library (https://github.com/quiet/org.quietmodem.Quiet). The JavaScript version of this library is used for encoding data to sound. This library works in a very similar way as old broadband modems. Such a modem converts (modulates) a digital signal into analog audio, and converts (demodulates) an analog signal into digital data. This way, computers were able to communicate over telephone lines using hisses and crackles.