What is a QR code?

The QR Code works in a similar fashion to the barcode but is a more complex version of its predecessor. 

Where the barcode holds only vertical lines and is therefore a 1-dimensional (1D) image, the QR Code is made up of both vertical and horizontal lines. It also contains a series of black squares and dots representing different segments of information. 

Much like the barcode, it is an encoded piece of data that when scanned is translated back into a format decipherable by us. 

Because of its more complex design, the QR Code is able to hold around one hundred times as much information as the barcode! 

Another key feature is the adaptability and availability of the QR Code. 

A QR Code can be scanned and read by almost any mobile phone in the world. This means that it is available to millions of people worldwide.

Another benefit of the QR Code is that it has an error rate of up to 30%. This means that if the QR Code is damaged in any way or dirty, it can still be read. Unlike when a bar code has been damaged and the cashier has to type in the number beneath the bar code. If that doesn’t work then you are left embarrassingly holding up the queue whilst someone finds a replacement. 

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