The QR Code is a new type of barcode, which is becoming popular at an enormous rate.
Those of you who have blackberries might have noticed a code like this when you added a "Contact" to your "BlackBerry Messenger".
This is the exact same type of barcode used on the blackberry; the only difference is you are not adding the seller as a "Contact" to your "BlackBerry Messenger" but as "Contact in your address book.
This barcode is not limited only to blackberries, but can be used by just about any phone with a built-in camera.
In this case, you can think of this QR Code as a "Digital Business Card".
Read more about the QR Code by visiting the following pages.