Well, I’m guessing it’s a temporary npub to send & receive private messages between my laptop and my phone (over nostr too): the content to be signed/encrypted/decrypted and the signatures/encrypted/decrypted-data.

I was thinking about using nsec.app as an alternative for the nsecbunker.com daemon/dockers: to run a shared account that can be controlled by multiple users (like for a company) - by keeping a computer with a Brave browser open with nsec.app and allowing my npub and my friends’ npubs. But this means I would need to re-approve new npubs if we log out (which means logging to that computer).