A QR code, short for Quick Response code, is a two-dimensional barcode that contains information that can be scanned and read by a smartphone or other electronic device. It consists of a pattern of black and white squares arranged in a specific way, which can be decoded to reveal a variety of data such as website URLs, contact information, or product details. QR codes have become increasingly popular due to their convenience and versatility, allowing users to quickly access information or complete tasks with a simple scan. They are commonly used in marketing, advertising, and ticketing, but their potential uses are endless. With the rise of mobile technology, QR codes have become an essential tool for connecting the physical and digital worlds.