QR code - Wikipedia
A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan.
QR Code Generator | Create Your Free QR Codes
With Dynamic QR Codes, you have full flexibility, because only a short URL that points to the content is encoded. Thus you can modify the stored links or files without having to generate What are Dynamic QR Codes? How can I use QR Codes successfully? What do I have to consider before printing?