> if you want another unambiguous identifier, it's going to cost Nonsense - my XMPP addresses are free, globally unambiguous, federated, and support 3 types of

> if you want another unambiguous identifier, it's going to cost Nonsense - my XMPP addresses are free, globally unambiguous, federated, and support 3 types of end-to-end encryption. A phone number is patently unnecessary. The only reason to require a phone number is to tie the encrypted packets to a known identity.