I’ve used nostr:npub1uf9gd9pax7534dy96mu603nqjlp9mht8az73ka0dy54rcfnvlxasumv8xc and it’s been very useful for all the logins it enables. I work with a combination of that and nostr:nprofile1qqsyv47lazt9h6ycp2fsw270khje5egjgsrdkrupjg27u796g7f5k0spzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqg7waehxw309ahx7um5wgkhqatz9emk2mrvdaexgetj9ehx2ap04n7f4d extension.
I would never ever plug my nsec in too many places. In the early days therre was no other option, but now there are a few.
Also, if you are an android your, Amber is apparently a great remote signer.
And on iOS Nostash works great!