A QR Code (Quick Response Code) is a matrix barcode which can be read by scanners, mobile phones with cameras or smartphone (ie: iPhones, Blackberry). The code consists of black modules arranged in a square pattern on white background. The information encoded can be a variety of contact or data information. You need to have a QR Reader in order to get the information, usually available for free on various websites and application (app) stores( I downloaded QR Reader from the Apple App Store for free). Try it here!