You step inside Walmart and your shopping list is transformed into a personalized map, showing you the deals that’ll appeal to you most. You pause in front of a concert poster on the street, pull out your phone, and you’re greeted with an option to buy tickets with a single tap. You go to your local watering hole, have a round of drinks, and just leave, having paid—and tipped!—with Uber-like ease. Welcome to the world of iBeacon.
http://www.wired.com/design/2013/12/4-use-cases-for-ibeacon-the-most-exciting-tech-you