QR codes (abbreviated from Quick Response code) are appearing in many different places today, and they are found to be quick and efficient when it comes to working with mobile phones and other devices which can read them. QR Code is a multipurpose instrument and it can hold all sorts of different types of valuable information like your company’s or your salesperson’s contact details, sales invoice information, promotional codes, location information, checksums, amounts, web links etc., which you can read using a QR code reader to automate some of the routine manual processes, like typing in things manually.