What is a QR Code?
A QR code (abbreviated from Quick Response code) is a specific matrix barcode (or two-dimensional code) that is readable by dedicated QR barcode readers and camera telephones. The code consists of black modules arranged in a square pattern on a white background.
Example
Suppose a restaurant implements QR codes on its menus to provide customers with easy access to additional information about dishes, such as ingredients, nutritional facts, or cooking methods. Each menu item is accompanied by a QR code that, when scanned with a smartphone, directs the customer to a webpage containing detailed information about the dish. This allows customers to make more informed choices and enhances their dining experience by providing relevant information at their fingertips.