What is QR code?

A QR code stands for Quick Response code and is a form of a matrix barcode. Also known as a two-dimensional barcode, this matrix barcode is another way to represent data that can be read by mobile devices and smartphones. QR codes were first created by a Japanese company, Denso Wavo in 1994. The company first made the QR codes for the car company Toyota and used the codes to identify the car specifications of each car the company produced. The code consists of a white background and black module patterns embedded within. The popularity of the codes grew, mainly because of their ability to hold huge amounts of information from GPS coordinates to website URL’s.

Storage

QR codes became popular in the business and technology industry after it was discovered that they are capable of holding a ton of information within a small space and also because many modern cellphones and smart phones can scan the code easily rather than using a portable scanner. The codes are formulated to store literally any type of information. Businesses and companies now incorporate QR codes in their advertisements mainly because QR codes can store all types of information the company wishes to advertise. Things such as information on the product the QR code was formulated for, the company information or any other relevant details the company wishes to add. Not all QR codes can hold the same type and same amount of information. Many factors come into play when determining the capacity of the code including the character set formulated for the code, the version of the QR code and the correction capacity. Numeric QR codes hold the most characters with a maximum capacity of 7000+ characters. Binary QR codes hold a maximum of 3000 bytes while Alphanumeric and Kana hold 4300 and 1800 bytes respectively.  

Reading QR codes

Any cellphone or smart phone with a built in camera can read a QR code. The cellphone/smart phone should also be equipped with a QR code reader known as a QR code application. The camera built into the phone allows for the QR code image to be scanned while the QR reader translates the graphics of the code into the information it is supposed to represent. Another benefit of a QR code is that cellphones and smartphones can read any QR code type no matter what size it is. This helps when business and companies are trying to save on advertising space but still want to market their products or services.

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