Mmmmmm FLdigi! I was wondering when I'd start to see people sending e cash into the audio or radio waves. I was thinking about laser modems as well actually which might be fun too.

How much data is a single aCash Cashu token? So many lovely modulation schemes to encode the token into. Particularly in unlicenced spectrum.

Or maybe sending the audio of a QR code via SSTV to a phone that has an app that demodulates the audio signal into the QR code.

Wonderful. Just wonderful.

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I think I read recently an ecash token is about 100 bytes. I really don't know though. And yes, ecash-by-light would the next cool thing to try.

it really depends. I don't think they have a fixed size. Rather it depends on how many proofs (coins) you are sending.

I think you're right. I initially had it set up to send one dollar use worth of sats (1540 I think), but the token size was much longer (and the audio over twice as long in duration). That's why it was only 21 sats...to shorten things.

laser modems omg