Get a new npub, post a message on your old one to tell your followers. That’s basically it.
Discussion
There's this thing called Metamask that is also used nowadays to authenticate and login to websites, games, etc. Maybe Bitcoin has something like that?
We can use nostr:npub1getal6ykt05fsz5nqu4uld09nfj3y3qxmv8crys4aeut53unfvlqr80nfm or nos2x for that. And nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft is building nsecbunker.com for multi-user key management.
That's great 👍 Thanks for the info.