Code Idea: Mapping and Promos at the mall

Yorkdale, a large shopping mall in Toronto, Ontario was the recent guinea pig in a 4QR test.  The best way to use the code in this situation is to make it a service-centric interaction.  Instead of reading the entire map, the user could simply scan the 4QR and use a mobile directory/mapping application to find the stores of their choosing (while starting to walk in that direction...).

By having a different code on every map, the system can even place your "You are Here" location more accurately.  Taking it one step further, if each store had a code out front, the store could point the user to a promotional landing page-- then when the promotion is over, point them to a Facebook page.  All without changing the code on the wall.  

What would you do as a retailer to easily share variable data with your customers? Leave a comment.