How QR code works
Technologies

How QR code works

You have probably come across the characteristic square black and white codes more than once. Nowadays, they are increasingly seen in the press, on the covers of magazines or even on large-format billboards. What are QR codes really and how do they work?

QR code (the abbreviation comes from "Quick Response") was written in Japan a long time ago, since in 1994 it was invented by Denso Wave, which was supposed to help Toyota track the condition of cars during the production process.

Unlike the standard barcode found on almost every product available in stores, QR code has a more complex structure that allows you to store much more information than in standard "pillars".

In addition to higher capacity and basic numeric encoding function, QR code it also allows you to save text data using Latin, Arabic, Japanese, Greek, Hebrew, and Cyrillic. At first, this type of marking was used mainly in production, where it made it possible to easily control and mark products in detail at a given stage of their production. With the development of the Internet, it has become more widely used in order to fully

You will find the continuation of the article in the October issue of the magazine

An interesting application of Tesco QR codes in South Korea

Virtual supermarket with a QR code in the Korean subway - Tesco

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