Not sure what a QR (Quick Response) code is? The take a minute to watch this YouTube video.
This presentation can also help explain it:
I’ve been communicating with someone at the Ace Group and they developed a sample QR code for me that I have shared with our advertising agency. Unfortunately, the agency doesn’t believe that QR codes will become very popular in the US for several reasons. I disagree. I can’t imagine how having an image of your brand that can be linked to web content could be anything but good…time will tell.