A QR code (abbreviated from Quick Response code) is a specific matrix barcode (or two-dimensional code) that is readable by dedicated QR barcode readers and camera telephones. The code consists of black modules arranged in a square pattern on a white background. The information encoded may be text, URL, or other data.

File:QR Code Structure Example 2.svg
What the components mean in the code.

And Now, my sites QR Code!!

qrcode
Refers to you to my mobile site

And now, a more detailed description for my blog!

qrcode
My detailed blog desciption

As you can see, as it contains more information, it is bigger…

So thats all about QR Codes. And oh, if you want to generate one yourself, visit Kaywa QR Code Generator