Vitor added a way to have temporary keys recently, it uses encrypted nsec and when you leave the app it erases the user.
アメジのジャーナリストモード (NFC タグとかに ncryptsec ぶっこんで temp ログインするやつ) 動いた #Amethyst #grownostr #testnostr
https://video.nostr.build/848ec97fe0c88dda0d5152e63bad8223c57fa8108ae66e8b549163a1c2224d83.mp4
Discussion
Actually I've been developing just an app that can simply write ncryptsec into NFC tag or card using mnemonic seeds and nsec though, what do you guys think about that?🤔