QR codes are sold by marking folks to other marketing folks. If it is relying on Google Glass to finally take off, you can put the nails in the coffin right now.
It's the friction that makes it useless. I saw a QR code on the window of a Chevy Volt that said scan for Volt info. It would have taken a lot longer to find and use a QR scanner than to just enter Chevy Volt into search on a mobile browser.
If QR scanning was a first class citizen and I could just look at it and instantly get the information, I can see QR being used by real people.
If QR scanning was a first class citizen and I could just look at it and instantly get the information, I can see QR being used by real people.