Not sure what you're asking here by "without existing your nsec."
Discussion
A few month ago there was talk about some way to use a client without having to put in your nsec to the client/website, kinda like a signing device.
Maybe that never went anywhere 😅
Well, there are signing extensions like Alby and nos2x, and there is nsec.app which uses a "bunker". They take away the need to enter an nsec (which is dangerous because it only takes one oopsie to a scam site and your nostr "account" is compromised. Some links: http://nostrwiki.crrdlx.infinityfreeapp.com/doku.php?id=wiki:nostr-extension
Ah nice, that's exactly the thing ☺️👍
Gina check that out thanks 🤗