It really is a nifty idea, but it does make me tired thinking about how far those bits have to travel! Did y'all ever play with acoustic transfer of data? I c

It really is a nifty idea, but it does make me tired thinking about how far those bits have to travel! Did y'all ever play with acoustic transfer of data? I could see using the speaker, mic, and a soft modem to transfer a few kB or so.