A QR – Quick Response - Code is a matrix barcode readable by Smartphones which have downloaded the correct software or App.
The information encoded can be a URL, phone number or other data.
The benefit is that it links a printed image with dynamic content on the web and can drive traffic to a specific web page or piece of web content. The URL is constant so the web page can be added to at any time and the web page will reflect this up-to-date content. The page could include offers or coupons for your customers.