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What is QR Code? 

QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached. A QR code uses four standardized encoding modes (numeric, alphanumeric, byte / binary, and kanji) to efficiently store data; extensions may also be used.

The QR Code system has become popular outside the automotive industry due to its fast readability and greater storage capacity compared to standard UPC barcodes. Applications include product tracking, item identification, time tracking, document management, general marketing, and much more.

A QR code consists of black modules (square dots) arranged in a square grid on a white background, which can be read by an imaging device (such as a camera) and processed using Reed–Solomon error correction until the image can be appropriately interpreted; data is then extracted from patterns present in both horizontal and vertical components of the image

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Comment by N@Z -MSCS on April 4, 2014 at 10:55pm

Great

Comment by +Shakeel Ahmad on April 4, 2014 at 10:37am

Comment by +Shakeel Ahmad on April 4, 2014 at 10:37am

Comment by +Shakeel Ahmad on April 4, 2014 at 10:37am

Comment by +Shakeel Ahmad on April 4, 2014 at 10:36am

Comment by Ѽ Gracious Heart Ѽ on April 3, 2014 at 9:16pm

how can we read this code at home? in markets there is a special red light to read this..

Comment by Ѽ Gracious Heart Ѽ on April 3, 2014 at 9:15pm

informative!!!

Comment by asi on April 3, 2014 at 4:51pm

Comment by asi on April 3, 2014 at 4:51pm

keep it up

Comment by iOS on April 3, 2014 at 3:31pm

informative. keep sharing

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