Billboards That Can See You

Inside the bustling Shinagawa train station here, a futuristic-looking vending machine has replaced rows of drink bottles and cans with a 47-inch touch-screen monitor.

When a person stands in front of the screen, a camera captures his image and a sensor determines the person's gender and approximate age.

Based on that reading, the machine "recommends" drinks that fit the customer's profile.

"With this machine, we can actually see who is buying what, instead of relying on educated guesses," said Toshinari Sasagawa, general manager of sales at an East Japan Railway subsidiary that operates vending machines in train stations.