People will not adopt a technical solution that serves to replace a manual task, if that solution is less efficient than the manual task it replaces. How could we think that QR codes for marketing would work any better than CueCat? Did we not learn the first time?
John Gruber: QR codes are built for machines, not humans. And they’re ugly.
Robot barf looks like QR codes.
I’m not saying I totally agree. But be honest, QR codes are not sexy. Even if you add a hot looking girl shooting pepsi all over the place.