A QR code (short for Quick Response) is a matrix barcode or two-dimensional code which can be scanned with a camera phone.

These QR Codes can contain a URL, contact information, a calendar event, email address and much more. Think of it as an electronic Business Card.

The technology has seen a large uptake in Japan and South Korea. However, here in the west there has been a considerably slower adoption of QR Codes

You can download Decoder /Reader software for your device from the ZXing Project