It's not that far-fetched; they read off motor neurons in the wearer's arm, not the brain. Same principle behind this prosthetic: https://www.youtube.com/watc

It's not that far-fetched; they read off motor neurons in the wearer's arm, not the brain. Same principle behind this prosthetic: https://www.youtube.com/watch?v=sk1NkWl_W2Y https://www.youtube.com/watch?v=sk1NkWl_W2Y It seems to work well enough for demos: https://www.theverge.com/2018/6/6/17433516/ctrl-labs-brain-computer-interface-armband-hands-on-preview https://www.theverge.com/2018/6/6/17433516/ctrl-labs-brain-c...