The thing I like about payload-in-code formats, like QRCode, is that the information is actually out there in the world with you, albeit in a machine-readable format. The URL actually, you know, is sharing your space.

With a payload-on-server code, the thing in the code isn't meaningful, even in to a machine, unless the WHOLE chain is working -- internet connection, server, the whole nine yards.

QRcode just seems, I dunno, more "honest."

Sheesh, does Sir Richard Branson have a plan to deal with the Vermicious Knids?