A QR code, or Quick Response code, is a two-dimensional matrix barcode that stores information in a pattern of black squares arranged on a white square grid. In the retail context, QR codes are widely used for various purposes, including product labeling, marketing, and mobile payments. Consumers can scan QR codes using a smartphone or QR code reader, which then interprets the encoded information. Retailers leverage QR codes for activities such as providing product details, enabling contactless payments, accessing promotional content, and facilitating efficient and interactive communication between customers and brands. QR codes offer a convenient and versatile means of connecting the physical and digital aspects of the retail experience.