CoinText is a good start. But it doesn't help anyone who has no computer and no phone. Really no technology at all. I wonder if a physical semi-offline solution is possible.
Maybe using radio transmitters? Something like what local city mesh networks are trying to use? No cell service, internet etc. Just radio passing along a signed tx and checking for new
But what do they use to interact with the coin?
No clue. I'd assume that the radio transmissions would be translated and sent through the internet once they reached an endpoint with connectivity. I'm just spitballing ideas.
