Forgot where your car is?

Hey, now this is a cool service. The Mall of America in Minneapolis just launched a new service with Philips to help customers remember where they parked among the 12,500 parking spaces at the mall. Apparently 50 people a day ask for help finding their car (300-400 on black Friday). Can't find any details for how it works, but presumably you'd text in your spot or area when you park and be able to recall it later. I'd use it, too bad its only available at the Mall of America.