A QR code, short for Quick Response code, is a type of two-dimensional barcode that contains information readable by barcode scanners, smartphones, or other QR code readers. It was developed in 1994 by Denso Wave, a subsidiary of the Japanese company Denso, and has become widely popular due to its versatility and ease of use.
QR codes can store various types of data, including text, URLs, contact information, Wi-Fi network details, product details, and more. The QR code is made up of black squares arranged in a square grid on a white background, with specific patterns used for encoding the information.
When scanned using a QR code reader or a smartphone with a built-in camera, the encoded information is quickly decoded and displayed on the device, allowing users to access websites, retrieve contact details, obtain product information, or perform other tasks related to the data stored in the QR code.
QR codes have found applications in various industries, including marketing, advertising, payment systems, ticketing, logistics, and more, due to their convenience and ability to store large amounts of data in a compact form. They have become a common sight in modern-day life and are used for a wide range of purposes.