Potentially, quick response (QR) codes   will revolutionise mobile marketing.code functions.

 They offer the opportunity to open URL links easily from mobile devices, enabling content to be accessed easily on the move.

This link to the new marketing program for Central Park in New York says it all, and is a great example of the flexability and creativity that QR codes offer, on top of the simple, relatively everyday things like recieving a boarding pass on your phone. http://www.youtube.com/watch?v=7OCyfV_k2_g