I am experimenting with npub login where authorization is an encrypted dm challenge/response (no need to type in 6 digit code at site). When it’s ready, I will show you and you might consider it for your login. 

 Sounds interesting, please let me know! 

 Yeah, the penny dropped when I saw what you did with npub login (kicking myself, why didn’t I think of that!). I realized I could generalize extend and make every #nostr client an authenticator, too! 

 Exactly!