Yeah that’s a great usecase, I think. From a security perspective, though, I wonder whether a malicious actor could trace the BT signal back to a user’s location? Before using it in a very public setting I’d want to have that answered definitively
I saw in the introduction that it is possible to use Bluetooth relay to extend the range of the local Bluetooth. It is possible to send messages to further places. It seems that there is no Bluetooth connection between us. I don't know if the relay must be Bluetooth, or if it can be a nostr relay.