German railway company recruits surveillance drones in fight against graffiti vandals

Having apparently concluded that traditional security cameras are no longer fit for the task, German railway company Deutsche Bahn plans to deploy surveillance drones in an effort to thwart rampant graffiti vandalism affecting its train cars. Each small drone will be equipped with an infrared camera and dispatched for overnight shifts at Deutsche Bahn's largest train depots. Flying nearly 500 feet overhead for up to 80 minutes at a time, they'll attempt to catch graffiti vandals in the act, reco...