The team connected high-density electrocorticography (ECoG) arrays to three epilepsy patients’ brains to record brain activity. Then it asked these patients simple questions, and asked them to answer aloud. Researchers said the algorithm recorded the brain activity while patients spoke. They noted the model decoded these words with accuracy as high as 76 percent. Facebook said it doesn’t expect this system to be available anytime soon, but it could soon make interaction with AR and VR hardware very easy: Earlier this month, Elon Musk’s Neuralink also announced a project that will let you control your iPhone via a device attached to your brain. While these devices may not hit the market in a couple of years, it’ll be an exciting space to watch out for.