Apple is making use of Smart Signs around its stores to help sell its products. The iPad-based displays contain information about the adjacent product and replace traditional paper signage.
One of the advantages of using a digital device for signage is that the app can be used to calculate and update information. In this case, potential iPhone buyers can see what rate plans are available,and see the price adjust accordingly.
When a customer asks for help from a Smart Sign, it sends out an alert to Apple store employees, who can claim the request and get a map of where that customer is.
