Nostr Wallet Connect (NWC) is a big f***king deal because it replicates in a decentralized manner how the payment and credit card networks tokenize your card to store in your phone.
I'm taking NWC one step further by developing what I am calling the Nostr Connect Protocol (NCP) a more generic and trust-minimized way for any two npub-equipped apps to securely communicate.
In fact, I have already implemented NCP for #nostr #safebox where each instance can directly communicate with another instance for presenting and verifying credentials.