So npub1pqpuqvqkj7263auyxnqxxfjlkxw44uf82vd3cs9r7p68yrv8zlgqxz0mjq (npub1pqp…0mjq) showed me an absolutely insane piece of 80s technology: A watch that can do calls, well, dial calls, by playing DTMF tones into a telephone. So cool!
https://www.youtube.com/watch?v=ozBf9YuqESg