A Tokyo restaurant chain has opened a small pub in one of the city's busiest train stations, with a robot bartender serving drinks to commuters on their way home from work. Called Zeroken Robo Tavern, the bar is located in Tokyo's bustling Ikebukuro train station and is owned by Yoronotaki, a company that operates a chain of izakaya-style restaurants around the country. The Zeroken Robo Tavern in Tokyo's bustling Ikebukuro Station has a robot bartender that can serve draft beer, sake, and mixed drinks The small space opened on January 23 and will run until March 19, part of a pilot program run to see how customers respond to being served by a machine instead of a human. Customers will first pay for their drinks at an automated payment kiosk. They'll receive a QR code receipt, which they present to the robot.