A QR code is a Quick Response code.
A QR code (Quick Response code) is a type of the matrix barcode (or the two-dimensional barcode invented in 1994 by the Japanese automotive company Denso Wave.
Denso Wave produces automatic identification products (barcode readers and related products), industrial robots, and programmable logic controllers.
What is QR stand for?
Quick response.
The barcode holds information horizontally and the QR code does so both horizontally and vertically. This enables the QR code to hold over a hundred times more information.
How does QR code work?
Basically, a QR code works in the same way as a barcode at the supermarket. It is a machine-scannable image that can instantly be read using a smartphone camera.
Every QR code has a number of black squares and dots which represent certain pieces of information.
A QR code uses four standardized encoding modes (numeric, alphanumeric, byte/binary), to store data efficiently.
The required data is then extracted from patterns that are present in both horizontal and vertical components of the image.
