QR Code is short form for Quick Response code. I found this often used on the Android marketplace to help us find the apps to install to our Android devices. What I did not realize was how easy it is to generate one.
For example, this is one a QR code to my other blog:
On the iPhone, you can use QR Reader and on Android devices, there is a app called QR Droid to help you. Both the above devices can read as well as generate the QR Code as shown above. On the computer, you just need to search for QR to find websites that can generate the images for you.
The barcode reader on Android can also read the code and auto fill the spaces for like when you want to SMS someone.