The extension is pretty simple and uses Google's chart API to generate a QR code for your post's URL. The user can scan it using his mobile's QR code scanner application. Once scanned, the embedded post URL will be read by scanner and user can visit it on his mobile without typing anything. So, it actually helps you share your posts without even using any Facebook, email or any other online mechanism.

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Yes, There is a new successor of BarCode which is gaining momemtum called QR code. The concept is similar but has wider set of applicability than bar code. QR is an image which can embed vital information like internet links (URL), an image, SMS, text etc. So, somebody using a QR reader, can find out the embedded web link and straight-away reach your site without even typing anything! Remeber how the cahier at retail stores do NOT type anything, they only scan bar code!
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