Palmer Luckey is developing virtual border wall technology

International borders and high security sites could one day be protected by high tech virtual defences. That's the plan of Palmer Luckey, the man behind Oculus virtual reality technology, who is now working on a way to secure America's borders from illegal immigrants. The scheme would employ lasers, as used in self-driving cars, to detect the movement of people, drones and other unwanted traffic into restricted areas. Palmer Luckey last hit headlines back in March after being jettisoned from Occulus, the VR company he helped found and sold to Facebook. In September 2016, it emerged that he secretly funded a pro-Donald Trump group that mocked Hillary Clinton online, during the US presidential race.