Second last class QR codes

This is an example of a QR (quick response) code. They are read with mobile applications much like a bar code scanner. Instead of just a number like in a bar code, the QR code lets you add much more information. The codes can be read from a distance and if the camera on your mobile device can see it it will read it and usually display a web page or some other information. Download a free app on your phone (Like NeoReader) and use the application to scan the code.

Here is another example of a QR code from a Vocaroo audio clip.

Here is a QR code that links to one of my Brainsharks