Scan QR Code uses the camera on your phone to read QR (Quick Response) and bar codes. It can also scan QR codes and barcodes of good photographs of QR codes or barcodes stored in your iPhone. This app also creates QR codes for the user which can also be emailed. It also retrieves (or tries to retrieve) information regarding the product which uses the bar code (for barcodes) or what the QR code (for QR codes) represents, in the best way possible. A QR code sometimes (but not always) represents an URL.