QR Code

QR code is a two dimensional bar-code (also know as matrix bar-code)  which is made up of squares and symbols within a b...

QR code is a two dimensional bar-code (also know as matrix bar-code)  which is made up of squares and symbols within a box. The information encoded can be text, URL or other data. The actual name for QR Code is Quick Response Code.

They are popping up everywhere, on billboards, in stores, in magazines and on the back of books. They are in cities and towns, on computer screens, and are now appearing as elaborate or rather not so elaborate ways of SMS texting people.

Here is the QR code of Trick-Center:

You can also make your own Quick Response Codes to send to your friends, place on your Website or add to you rather large Billboard in the city center. You can find the QR Code Generator at 
this website 

Overview of QR codes
Although initially used for tracking parts in vehicle manufacturing, QR Codes are now used in a much broader context, including both commercial tracking applications and convenience-oriented applications aimed at mobile phone users (known as mobile tagging). QR Codes can be used to display text to the user, to add a vCard contact to the user's device, to open a URI or to compose an email or text message. Users can also generate and print their own QR Code for others to scan and use by visiting one of several free QR Code generating sites. Frank C. Hudetz, a US Marketing Services Professional, claims to have invented the idea of mapping bar codes to a URL
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QR Codes storing addresses and URLs may appear in magazines, on signs, buses, business cards, or on just about any object about which users might need information. Users with a camera phone equipped with the correct reader application can scan the image of the QR Code to display text, contact information, connect to a wireless network, or open a web page in the phone's browser. This act of linking from physical world objects is known as a hardlink or physical world hyperlinks.
Google's mobile Android operating system supports the use of QR codes by natively including the barcode scanner (ZXing) on some models, and the browser supports URI redirection, which allows QR Codes to send metadata to existing applications on the device. Nokia's Symbian operating system is also provided with a barcode scanner, which is able to read QR Codes, while mbarcode is a QR code reader for the Maemo operating system. In the Apple iOS a QR Code reader is not natively included, but some iTunes Apps, for free, are available with reader and metadata browser URI redirection.

Micro QR Code is a smaller version of the QR Code standard for applications with less ability to handle large scans. There are different forms of Micro QR Code as well. The highest of these can hold 35 numeric characters
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***********Topic Adapted From C-DAC************

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