Well, we all know about QR
codes. This is for the ones who spent the last decade in space and missed one
of the important advance in mobile computing.
QR Code is a type of matrix bar-code first designed for the automotive industry. Lately, the system has become
popular outside the industry due to its quick readability and significant storage
capacity when compared to standard bar-codes. The code comprises of black square
dots arranged in a two-dimensional pattern on a white background. The data encoded
can be made up of four standardized kinds
of data (numeric, alphanumeric, binary, Kanji), or through supported extensions,
virtually any kind of data.
They come to us from Japan
where it is very common. QR is short for Quick Response, they can be read quickly
by a cell phone. They're used to take a piece of information from a media and put
it in to your cell phone. You may have seen QR Codes in a magazine advertisement.
When it is in your cell phone, it may give you information about that business.
If you show your phone a QR code to see a trailer for a movie, then your phone will
perform a search and display the movie.
The reason why they're more
useful than a common bar-code is that they can store much more information, including
web address links and text. The other important feature of QR Codes is that rather
than requiring a chunky handheld scanner to read them, many modern cell phones can
scan them.
This article was written by Prem Anand. He is a Computer Science Engineering student and the
Chief Author of this blog. Follow him on Twitter or Stay in touch with him in Google+ or subscribe to his public updates on Facebook and appreciate his hard
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