Knowing Your Audience

When I was flying out here to San Francisco I picked up the in-flight magazine for a quick look. It was mainly to figure out what I'm going to have for breakfast.As I was putting it back into the seat-back-pocket in front of me I spied something:It's the QR code on the lower-right of the ad.You can decode the code in the air, but you can't act on it unless you are on the ground.So, other than making the ad look high-tech, does it do anything?Now don't get me started on the QR codes by themselves.  :-P  That's another post...