[alamortsubite]

> Has anyone ever seen a QR code being scanned? No? Just wave a screenshot of your friend's digital vaccination record? Yeah, that works.

Sometimes. In my experience, it's just as likely your photo ID will be scrutinized and compared with the QR code. Which in your scenario does not work. The problem is there are rarely repercussions for the individual that presents the bogus documentation, or the entity that accepts them.