Looks very interesting!
Question: you say you want to use it as cash - how would users know the amount of bitcoin loaded?
When receiver gets a 💊 is able to see it's xpub, so can import it on a wallet to check balance or add funds. We're planning to make an easy app to do this even more easier
at the moment you connect the pill to any device it can promt the xpub of the generated seed and with it check the balance.
at the moment this is the case, we plan to improve this by providing some more visual and intuitive tools.
Would look great encased in resin
yea you get it! epoxy resin ✌️