New Chirp tool uses audio tones to transfer data between devices
A new open-source tool named 'Chirp' transmits data, such as text messages, between computers (and smartphones) through different audio tones. [...]
https://www.bleepingcomputer.com/news/software/new-chirp-tool-uses-audio-tones-to-transfer-data-between-devices/Open linkView original on infosec.pub
Holy shit, what if we transmitted that over the phone?
And like we connected all the phones together
I don't think we would need to use audible tones, even. My goodness, we might just be on to something.
...back in the day, if you built a certain type of tone generator, you could talk on pay phones for free, or even call long distance!
Or just whistle.
And this is still how you program handheld radios.