Facebook purchased CTRL-Labs (pronounced “Control” labs), a company that allows uses to control computer interafaces with brainpower. They use a mix of machine learning and neuroscience to accomplish that. While they are not the only company that tries to do that, CTRL-Labs is considered to have a quite pragmatic approach to brain computer interfaces. Users wear a band on their wrist to capture signals that the brain is sending to the hand. In turn, the band sends the signals to a phone or computer. By thinking about hand movements you can control the computer.