Haha, old technology returns

I guess maybe this is useful, but it sounds really dumb. I was looking at getting a heart rate monitor that could upload data to a PC. The downlink on some of them works by audio: you put the heart rate monitor near the speaker of your PC, and your PC downloads intervals and stuff to the monitor via audio over the speakers. I haven't figured out yet how you go the other way. Haha, of course, it uses your microphone.

That just seems so primitive. All I can picture are the big old acoustic couplers from the 70s that you'd stuff a phone into to talk to a computer

They used to sell these watches/organizers that would get info from your PC by being held up to the monitor, and then your monitor would flash and shit.

Seizures R fun