Telepathy has long been considered the stuff of science fiction – Star Wars hero Luke Skywalker using the Force is part of cinema’s iconography.

But controlling computers or other devices, including prosthetics, with the human mind has taken another step towards reality with Elon Musk’s latest venture. He believes the possibilities of this technology are limitless.

But, as is often the case with Musk, it isn’t without controversy. Owen Fairclough has more.