A QR code, short for Quick Response code, is a two-dimensional barcode that stores information such as text, URLs, or contact details. It consists of black squares arranged on a white square grid and can be scanned using a smartphone or QR code reader. QR codes are widely used for various applications, including mobile payments, ticketing, and marketing campaigns, as they enable quick and convenient access to digital content. They have become an integral part of our modern, tech-savvy world, simplifying information sharing and enhancing user engagement.