A Quick Response (QR) code is a two-dimensional code that can be scanned by smartphone cameras to automatically pull up text, photos, videos, music and URLs. It is a great tool for your library or classroom and the uses are endless. You can use them to connect students and teachers to databases & e-books, author interviews, your website or blog. For a more detailed description go here. To generate your own QR code there are a few sites that offer this for free I use Kaywa to create a QR code for my blog.