After a long wait, Secom's security drone is ready for service... and it has a clever trick up its sleeve. The robot will not only capture photos of cars and people that wander on to forbidden grounds, but automatically chase them to get their faces and license plates on camera. While it won't be much help if the thieves know how to run -- it can't move faster than 6MPH -- it could make the difference between a usable photo and a shot of an empty parking lot.