Camera-equipped mobile devices provide the "reading device." Mobile always are with a user, so the QR reader software allows people to get information about anything with a QR code, wherever they are. Combine that feature with Google's advertising revenue model, location-based services and one ends up with the mobile equivalent of "tagging."
Beyond the ability to create richer information about places and things, widespread QR creates a richer platform for mobile advertising. That is all the incentive Google needs to push the technology.
The codes are increasingly found on product labels, billboards, and buildings, inviting passers-by to pull out their mobile phones and uncover the encoded information. QR codes can be used in newspapers, magazines or clothing.
Tracking information for products in industry, routing data on a mailing label, or contact information on a business card are other potential applications.
QR codes also are part of the move to "augmented reality," providing richer information and context about the physical world around any mobile user, where they are. Again, the marketing possibilities are obvious.
