We are seeing QR Codes in our newspapers, handouts and trade shows to allow smartphone users to scan the url or related information.
This QR Code for example contains all my contact information and can be scanned by certain barcode scanners and smartphones using free apps and your phones camera.
You can create your own here http://qrcode.kaywa.com/ for more information checkout Wikipedia http://en.wikipedia.org/wiki/QR_code
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