Quick Response (QR) code is something like a bar code, but a bar code is restricted to only a local group, where you have to program the barcode reader that the particular code corresponds to a particular value. But a QR code can be globally read by and QR scanner to decode the message or the product info. I found something interesting on the internet yesterday, on how to create a QR code for URL of your website/blog or for your business card.
A QR code is next gen state of art technology which is used to encrypt large messages and product information. All that you need to read a QR code is a browser or a smartphone, with which you can use QR decoder and you can see the message.
How to create a QR code:
Step 1: Goto http://www.unitaglive.com/qrcode
Step 2: Select the type for which you want to create a QR code.
Step 3: Customize the colour and the appearance of the QR code.
Step 4: Download and use the QR code on your blog.
How to read QR code with your browser:
You can use google chrome extension to decode or encode a QR code on the internet. There are many extensions used to encode and decode a QR code. But this particular extension can be used to both encrypt and decrypt any information.