Robot security guard patrols San Francisco gas station

High tech crime stopper changes the look of security. Robots are popping up at corporations, campuses, shopping malls and airports. A San Francisco Shell station has a robot as extra security for those at the pumps. A robot serves as a security guard at a Shell Station at 8th and Market streets in San Francisco. The robot has four cameras, and rolls at 3 mph, about the same pace as a person walking.