to the neural activity picked up from a chip implanted in a pig's brain. you don't need brain implants to control machines. headsets like this let you control devices by concentrating on them, so all you need to do is strap on some headgear and use the power of your mind. crash in principle, it is quite straightforward. the eeg sensors on this headset measure electrical signals in your brain, deciphering two mental states. your focus or calmness. once you reach the threshold for either, an action is triggered. all right, fan, switch on. hey! i switched on the fan. it's like technology telekinesis, isn't it? that is amazing.