In an almost Star Wars-esque echo of "We don't serve their kind here," United Airlines and Delta Air Lines have joined other airlines in banning humanoid and animal-like robots from flights. The devices that fall under this rule are defined by United as a humanoid robot that is an artificial intelligence-driven or remote-controlled machine that mimics how a human looks, moves, thinks, and speaks. The companies are joining Southwest Airlines in banning the bots. But, despite claims that no FAA rules were broken, Southwest banned any robots from its flights just two days after the incident. While US airlines don't seem impressed by humanoid robots, the machines are being tested by Japan Airlines at Tokyo's Haneda Airport as baggage-handling assistants.