Facebook buys 'mind-reading wristband' firm CTRL-Labs bbc.com

Facebook has acquired a start-up which is developing devices that can pick up electrical signals from the brain and transmit them to a computer.

CTRL-Labs has designed a wristband that can identify the signals the brain sends to the hand telling it to move, and decode them.

It could then transmit that command – for example, to press a button – to a computer or other device.

It also "captures your intention", said Facebook VR president Andrew Bosworth.

"So you can share a photo with a friend using an imperceptible movement or just by, well, intending to," he said in a post on his personal Facebook page.