@moonbolt @sir Absolutely. Main issue to target is if the QR codes get too big on large shopping trips. Data would need to be compressed as much as possible (using an open compression algorithm obviously) otherwise you end up with the same problem Matrix is currently having where verification using the new QR codes is really temperamental because the codes are huge.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!