QR-code (Quick Response Code)

A two-dimensional matrix barcode, which is a square matrix of black and white modules (cells) that encode information. QR codes were developed by Denso Wave in Japan in 1994 and have become popular due to their fast reading speed and ability to store large amounts of information. They are widely used for a variety of purposes, including transmitting URLs, contact information, text information, geographic coordinates, calendar events, and more. QR codes can be read using smartphones and other devices with cameras, making it easier to quickly access the encoded information.