The QR Code is the evolution of old QA
The meaning of QR Code A QR code (short for Quick Response code) is a two-dimensional barcode that can be read by a smartphone or QR code scanner. It consists of black and white squares arranged in a specific pattern and can store information such as text, URLs, contact information, or other types of data. QR codes were first developed in 1994 by a Japanese company called Denso Wave, and were initially used to track parts in vehicle manufacturing. They have since become widely used in marketing, advertising, and other applications, as they can quickly and easily provide users with information or links to websites or other online content. To read a QR code, you typically need to use a smartphone camera and a QR code scanning app, which can be downloaded for free from app stores. When you point your phone's camera at the QR code, the scanning app will automatically detect and decode the code, and provide you with the associated information or link. What are the components of QR code...