> 1. Make it QR code scanning instead of tapping so it can be a PWA.
Misses the point completely. The entire idea is that this enforces in-person meetings, which QR codes do not.
Misses the point completely. The entire idea is that this enforces in-person meetings, which QR codes do not.
Maybe if there's a "celebrity" that displays it on a live stream, that's a bigger issue, but there could be other mechanisms to dissuade this behaviour. Perhaps you could only add one friend with one QR code.