A QR code or a Quick Reference code is a set of black and white squares in a unique pattern. They convey a meaning, text or most often a website URL. The unique arrangement of the squares inside may look very cryptic and complex to the human eye but is plain and simple to a specially designed QR code reader. Current mobile phone cameras are also equipped to read QR codes and display information present in the same.

Who use it?
All IT companies, especially product companies can use it to...