In the term QR code, QR stands for Quick Response. These codes are the images that we can often notice as graphic forms of dots and black squares. These can be seen on the product’s packaging, on the Internet, newspapers, magazines, and almost everywhere. These codes are scanned by compatible mobile devices. QR code reader and scanner are used for scanning to access the information that such a small graphic design contains. It is basically, decoding the coding and availing the information. Let us understand how do QR codes work? There is a familiar term ‘barcode’. The shopkeeper uses a device to scan the barcode while the billing process. Quick response code and Barcode work the same way. There is only one difference between the two. Barcodes only contain information or price details about the product(s). QR bar scanner application is used to fetch the information. And QR codes are featured to direct users to pages of the website, payment gateways, discount vouchers...