5 ms·
“One of the higher-frequency harmonics inevitably created by any real-world DAC during playback will then be the original fundamental, which should leak to the
by mikestew 9mo ago
“One of the higher-frequency harmonics inevitably created by any real-world DAC during playback will then be the original fundamental, which should leak to the environment as a short-range radio transmission via the ad-hoc antenna formed by the physical wires and circuit traces in the audio output path.”
Sometimes I think I’m a smart guy…and then I read of people doing shit like this.
- deleted 9mo ago[deleted]
- jofzar 9mo agoCame here to say this, I literally can't believe this works. It's like a couple of years ago where someone showed a proof of concept of turning a HDD into a microphone
- fragmede 9mo agoVan Eck Phreaking dates back to 1982, which used CRTs, and if you're aware of that, it's not an insurmountably huge logical leap to realize that modern hardware can be exploited the same way (thanks to greater sensitivity in receiving devices). https://en.wikipedia.org/wiki/Van_Eck_phreaking https://en.wikipedia.org/wiki/Van_Eck_phreaking
- ihaveajob 9mo agoI first learned about this while reading Cryptonomicon. It seemed too fantastical to be a real thing.
- hackernudes 9mo agoPretty sure it was in Snow Crash
- ihaveajob 9mo agoNo, check out https://en.wikipedia.org/wiki/Cryptonomicon#Technical_content https://en.wikipedia.org/wiki/Cryptonomicon#Technical_conten... It was in a passage where some secondary character was in a prison cell and managed to spy on the screen across the wall using the technique.
- torcete 9mo agoReminds me of the theremin. Turning an interference into something useful (or beautiful)
- hahahahhaah 9mo agoTHIS is what you call hacking
- gchadwick 9mo agoA shame this hasn't shot to number 1 on HN and stayed there. At least it's getting reasonable upvotes. This is a truly fantastic piece of hacking, going by the original meaning of the word as used within the dawn of the computer era.
- deleted 9mo ago[deleted]
- qingcharles 9mo agoMe, every day on HN, feeling that imposter syndrome.