On: Show HN: TCP/UDP over sound

[vacri]

Some ye olde modems had a socket that you plugged your regular handset into: https://en.wikipedia.org/wiki/Acoustic_coupler

I think one was used in the film War Games, but can't recall clearly.

[larholm → vacri]

War Games used a Dataphon s21d, iirc.

https://de.wikipedia.org/wiki/Akustikkoppler#/media/File:Acu...

I had one for my C-64.

[mirimir → vacri]

Back in the day, I carried an acoustic coupler with my laptop. Also a patch cable with alligator clips. And tools to disassemble stuff.

[aylons → vacri]

I stand corrected! At least until the latter days of dial-up.