Facebook announced the acquisition of CTRL-labs, a New York startup that specializes in allowing humans to control computers using their brains. The size of the deal was between $500 million and $1 billion. The startup will join Facebook Reality Labs, a division of the social media company that is working to develop augmented-reality smart glasses. The vision for CTLR-labs’ technology is that it will use a wristband that allows people to control their devices.

CTRL-labs is working with brain science and machine learning to create interfaces for people to control and manipulate computers by thinking. Its development-stage wrist-worn device uses sensors to track gestures and would act as an input device.