How about letting people bring their own badges? Sure, there might be an identification issue, but there are other ways to make that work.

Any thoughts on the practice of reusing the lanyard and/or some part of the badge? It’s fairly frequent for shoestring operations to ask people to leave their badges so they can reuse the non-identifying part. Less wasteful.

Was also surprised you dismissed the prominence of a first name, especially since your first name is quite salient in some of the positive examples you give.

Glad you came to Montreal, though it‘s sad you didn’t enjoy the weather. Looking at the data from January 13–15, 2011, it sounds like it wasn’t that cold. But cold is relative.
With both Bret Victor and you having spoken at Cusec, I feel like I should get into it (I teach at Concordia). Too bad I missed both of your talks. Victor’s has been on my mind since I watched it.