How does Elon Musk's Neuralink brain chip work? A step-by-step guide to the controversial technology - as the first human is implanted

Despite a controversial history of animal testing, the first human has had a chip implanted by Elon Musk's company Neuralink. After gaining approval for human experiments, the firm has now put its first Neuralink device, called'Telepathy', inside a person's brain. Musk claims Telepathy enables control of your phone or computer, and in turn almost any other device, 'just by thinking'. The billionaire entrepreneur hopes it will allow users with disabilities like Stephen Hawking to'communicate faster than an auctioneer'. Here, MailOnline reveals everything you need to know about the contentious technology, which has seen Musk accused of'playing God'.