Snappr is a service that allows you to create 2D QR codes. Seems quite cool – but Im still trying to figure out exact uses for it. On Snappr you can create your own QR code linked to say for example your social networking sites such as Facebook, Twitter etc.. you can also add in codes for text messages (160 Chars), contact details, websites addresses (wahtever you want really), as well as Music files and images. So all the information is encoded in the QR code. Im presuming you need a reader of some sort to interpret the image. There seems to be a movement towards embedding these codes on bags, fashion, public places. Its interesting anyway. Go check it out and comment back with any updates. Id be very interested to hear what people know and have used them for. I saw an article in Mashable by Dana Oshiro Have a read of it, it proposes 5 uses for the Qr code.
The image below is a QR code for my Twitter link