Advertising Age - Research Team Develops Shopping-Cart Ad System: " Each video screen is embedded with an RFID chip that interacts with chips installed on store shelves about every two feet. Without it, there would be no way to create point-of-decision advertising -- so a shopper strolling in the soda aisle would get an offer for Pepsi, for example -- a capability that could radically upend conventional in-store marketing practices... Beyond advertising, the system also promises to offer data insights long sought by consumer-product marketers. 'This will give you second-by-second data on shopping habits, dwell times, what aisles shoppers go down,' Mr. Kramer said. 'That's information that has never before been available.' "