Rubbish. Absolute rubbish. It's a cheap EEG that just translates the strength of the signal it receives from your brain into fan spinning speed. We've had the ability/technology to measure "brainwaves" using EEG for DECADES. All this thing does is check how hard you're concentrating, which it can measure by the increased spiking activity in your brain. Whether you're concentrating on making the ball move or trying to remember what you had for dinner 2 weeks ago will have no difference for this piece of crap.
EDIT: I'm as big a Star Wars fan as most of the fans I know. I've spent most of my childhood pretending to fly X-Wings all over my living room. I would love to "use the force" any way possible, but this toy can only be one of two things: a) A really stupid gimmick for old Star Wars fans or b) a really overpriced toy for a kid that's too young to be playing with things that are priced over $100!
EDIT: I'm as big a Star Wars fan as most of the fans I know. I've spent most of my childhood pretending to fly X-Wings all over my living room. I would love to "use the force" any way possible, but this toy can only be one of two things: a) A really stupid gimmick for old Star Wars fans or b) a really overpriced toy for a kid that's too young to be playing with things that are priced over $100!