Great question, website visits and contact info. That is my nip 5, not my email, but I'm going to back it up with an email before the conference so I don't miss anything.
Discussion
Maybe since this is a web client keep the URL in text, as this is easily typable in browser. Add a QR with nostr:npub123, or coracle.social/yournpub
Actually, that made me think… Just as we use nostr:
That would make it clear in situations like a business card which is which since they both look the same.