A QR code (Quick Response code) is a type of two-dimensional barcode that can store a variety of data, such as text, URLs, or other information. It consists of a grid of black and white squares arranged in a specific pattern, and it can be scanned using a smartphone or QR code reader.
When scanned, a QR code can link to a website, display contact information, provide event details, or even trigger an action, like making a payment or opening an app. QR codes are popular in advertising, business cards, packaging, and promotional materials because they provide a quick and easy way to share information with just a scan.