[phyzome]

I wonder how well these scan under less-than-ideal lighting and focus conditions. The standard QR code would be a lot more robust...

[bhasinanant]

It's a slight tradeoff. Digital works flawlessly though Still experimenting with how it works with print.

[fragmede]

Digital is trivial. what you want is to be able to scan a QR code off a person's shirt, on a photograph taken at a convention, from a distance.