You can’t sign for the other person unless you have their private key.
Discussion
Why can’t you scroll through someone else’s npub and sign with your nsec?
Interesting. This is an additional story that adds functionality. Will add
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nostr:note1906cl0h7hllqyuyh9zmugzmrfqk60dzer9mh3uznjnaa9smafd2qrgyzpz
Do you mean that you'd be scrolling their their feed but then replying as yourself rather than as them? If so, then yeah you could easily do that. Sorry, I thought you meant replying as the person you were impersonating.
Cool
“the person you were impersonating” is an interesting way to put
Perceiving or Empathizing might fit here