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Definition of QR

This is a code whose acronym in English means “Quick Response”, it is practically the evolution of the bar code and when it is scanned it allows you to see the information it contains.

It has many uses, among them to show the information of the products that are in supermarkets and stores, as well as scanning it from your cell phone you can pay for it quickly and without handling money.


  1. Code
  2. Code with information
  3. Code with quick response
  4. Quick response
  5. Type of two-dimensional barcode


We have already seen that the qr code is the evolution of the barcode and it was created in 1994 by the Japanese company Denso Wave, a subsidiary of Toyota.

This code has three squares in the corners that allow the reader to detect the position of the code. In addition, the objective of the creators, who were a team of two people led by Masahiro Hara, was that the code would allow its content to be read at high speed.

Although it is thought to have existed since the 1940s and expanded in the 1980s, and before making its way into our day-to-day lives it was invented and used by Toyota to help label car parts on production lines.

Similarly, it is known that in the 1960s, Japan had a remarkable economic prosperity and supermarkets sold other products besides food, such as clothing and others.

That is why barcodes were created with a POS system, but they were one-dimensional and could only store 20 alphanumeric characters of information and worked with one dimension. In response to this, Denso Wave evolved to qr codes.


As a curious fact, one of the many applications of the qr code is that you can scan the code offered by a smartphone that is connected to the wifi signal with your own mobile without the need to enter the key to connect.