I agree that's a nice use case (to get details about a grill in a store), but it's not an example of advertising. Even for that use case, QR codes seem like an

I agree that's a nice use case (to get details about a grill in a store), but it's not an example of advertising. Even for that use case, QR codes seem like an interim solution, while we wait for better recognition apps (photo [of object or tag] -> recognition software -> search -> detailed info about object). An example of this is the Google Goggles app (which is not to be confused with Google Glass): https://en.wikipedia.org/wiki/Google_Goggles https://en.wikipedia.org/wiki/Google_Goggles