What makes you believe there is a nip for that? Where is it implemented? I'm curious to know as I'm working on nostr based community "opinions". It's still work in progress but can be tried out here: https://beta.walletscrutiny.com/hardware/passport/ 

 https://nostrapp.link/reviews 

 It uses kind 1985, defined in https://github.com/nostr-protocol/nips/blob/master/32.md 

 Excellent, that's it! Thank you 💜