QR-coded PeerInfo

Is there any standard for (or, more likely, practice of) encoding PeerInfo in a QR code? It seems to me that this might be a way for people to get their friends into a libp2p-based network: get your friend to scan your QR code so that their app can immediately connect to yours and start interacting or bootstrapping or whatever from there.

Perhaps this would be ideally combined with a text-based encoding of PeerInfo, which could easily be sent by email or secure messaging app or whatever.

There is an unmaintained repo for IPFS. Maybe you can borrow some ideas from it?