JoshuaInNippon writes "Not sure what you're thirsty for? New vending machines in Shinagawa Station in Tokyo will tell you based on your age and gender. The machines, controlled by a centralized server, come equipped with sensors that recognize basic costumer information, and then provide recommendations alongside the list of available drinks. A massive 47-inch touch panel display is used in place of the typical button system, allowing for an automatic digital advertising mode when no people are directly in front of the machine." A Massachusetts-based vending machine company has even come up with a line of biometric snack machines that tie your thumbprint to a credit card.