[pbalau]

> the mobile telephony system only works in the first place if the system knows how to route incoming calls and SMS messages to a person's telephone

Like every other messaging system. Because you know, in order to send a message you need to know where...

[jstanley]

Not quite. Ricochet IM[0] is a messaging system based around Tor hidden services. The entire purpose of Tor is the ability to route messages to people without finding out where they are.

[0] https://ricochet.im/

[ex3ndr]

Tor is power hungry and can’t scale for billions of users.