QR code is an abbreviation for quick response code. It is a type of 2-D barcode (also known as matrix barcode). Unlike a 1-d barcode, QR codes can encode a wide variety of data types, including numeric, alphabets, special characters, and binary data as well.
QR code consists of a set of square dots arranged in a square grid pattern with a white background. The square dots are randomly arranged in order to encode information.
QR code was invented in 1994 by a Japanese automotive company named, Denso Wave. Denso Wave is a subsidiary of Toyota Motors.
The original QR codes are QR Code Model 1 and Model 2, with the largest version capable of holding up to 7,089 numerals. But while usage has spread all over the world, new versions have sprung up to support sophisticated uses.
The micro QR Code is a type of QR Code that standardized in Japan in 2004. It only needs one orientation of pattern detection, is small enough to be printed on a very small space.
The IQR Code was released in 2008 and can be in a square or rectangular modules. The IQR Code was followed by the SQRC which implements QR reading restrictions. It can be useful when you need to store private details. The “FrameQR” surfaced in 2014 and has a “canvas area” that offers flexibility in code designing. You can use FrameQR to include photos in the code.
The purpose of the QR code was to develop such an encoding/ decoding system that allows quick and reliable scanning of fast-moving automotive equipment. In workshops, automotive parts are moved quickly from one place to another and are adjusted together. It is difficult to read such type of moving information with simpler barcodes; hence QR Code was developed to cater to those needs.
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