What is QR code
QR stands for Quick Response code, is a type of 2D bar code, first invented in Japan in 1994. The design was modeled on the colored pieces from ‘Go or Weiqi’ a board game.
History of QR code
Automotive Components company Denzo Wave devised the first QR code, short for quick response as it was able to scan various car components at high speeds enabling them to be sorted stored or combined much more efficiently.
Adoption of QR code
By the early 2000s use of the codes had become widespread across most of japan especially in logistics for processes like shipping and handling but also in everyday life like at airports and on street posters.
Design of QR code
By this point the established design for codes was a trio of black squares one each in the upper left upper right and lower left corners which enabled scanning devices to detect their presence immediately.
How QR code works
Every QR code consists of a number of black squares and dots which represent certain pieces of information.
Read the full article at: What is QR code and How it Works — Bhai loog
