This is a great device, spec was an affordable offline pos for unbanked.
Its pretty perfect, although we will update the device to be a bit leaner.
nostr:nevent1qqsp6wkftugtg3a9us338qun9uq9v566tl3ucgt...
Wasn't the Offline Shop extension created originally by @fiatjaf ?
https://github.com/lnbits/offlineshop
https://github.com/lnbits/offlineshop
1