Most people aren't going to register or check the QR code unless you have to go use what they bought. Game codes are basically a version of this. What could ha

Most people aren't going to register or check the QR code unless you have to go use what they bought. Game codes are basically a version of this. What could happen at some point is unique UPCs that show where and when something was sold. If you checked the QR code and it was a log of when and where it had been checked, then it might be usable.