QR code
A QR code (short for Quick Response) is a specific matrix barcode (or two-dimensional code), readable by dedicated QR barcode readers and camera phones. The code consists of black modules arranged in a square pattern on a white background. The information encoded can be text, URL or other data.
Below are a list of some of our favorite QR code readers as with links to download on each major mobile operating system:
AT&T Code Scanner
AT&T Code Scanner reads UPC, QR and Data Matrix barcodes that you find on products, in ads or on-line, allowing you to compare product prices, read product reviews, view mobile web sites and video clips, get coupons and discounts or learn more about your favorite products.
App Store (iOS)
Android Market
Blackberry App World
BeeTagg QR Reader
App Store (iOS)
Android Market
Blackberry App World
Scan
Scan is the most straightforward QR Code scanner available. If your iPhone (or iPod Touch*/iPad 2) came with a built-in QR Code scanner, this would be it!
App Store (iOS)