Right now, mind-controlling a machine isn't pretty: you typically wear a silly cap or headset, or else subject yourself to open brain surgery to get a deeper link. Australian scientists might have a better way, though. They've developed a brain-machine interface that taps into your motor cortex through a relatively simple operation -- you won't need to gamble with your health to have a permanent connection to robotics. The device (known as a stentrode) would let you directly steer an exoskeleton or artificial limb through thoughts alone, even if you need the implant for "many months" at a time.