hodlbod on Nostr: "Log in with nostr" should give you a pubkey and the ability to sign notes. This can ...

"Log in with nostr" should give you a pubkey and the ability to sign notes. This can be forged, so yeah, if you need to authenticate the user's subscription or whatever you'd have to sign something. But if it's a free thing, and I choose not to interact, there's no reason to leak my activity.