Having a phone number is all but a necessity in today's world. Many internet services require you to have one for 2-step verification. Messaging apps such as Signal, Telegram, and WhatsApp require one as your account identifier. In many ways it's it's your centralized fiat personal identifier. Yet the level of security and privacy is laughable. Texts and calls are easily tapped and traced. Your location is viewable 24/7 by those "in charge". Not to mention how easy it is to perform a whole cornucopia of SIM attacks. This is legacy technology. And Nostr can fix it! Your keypair is your phone number for the 21 century. I'm excited to see an OAuth/OpenID-like spec for Nostr and for phone numbers to go the way of the dollar.