These guys have developed something quite cool. I will post the link so you can go see for yourself. Basically you take a picture of a marker, it gets sent to the server and gets a response with possible actions.
http://www.shotcode.com/data/movieformat
make the mobile Internet accessible in two clicks or less
After having downloaded OP3’s mobile software, the user only have to point the mobile phone’s camera to the ShotCode that represents the content he or she wants to download and press one button.