A QR code is a imagee which is filled with informqtion which we cannot read. Each QR code needs a QR code scanner. QR code scanners are used at shopoing malls,banks, libraries and post offices to verify the amount and other details about the product in the QR code. We can also make our own QR code and print or publish it on the web. I am giving the web address for that QR code generator website https://www.the-qrcode-generator.com/ this the web address for the QR code generator.