Full form of QR is 'Quick Response', so QR code is ' Quick Response Code'
What is a QR code?
A QR code is an optical label that can be read by QR devices and contains data about the object to which it is attached or a square-shaped black-and-white symbol
Who invented QR Code?
An example of a matrix barcode is a QR code, which was developed in 1994 by the Japanese automaker Denso Wave.