We're working on the latency, but a Kinect actually _can't_ do the same thing in this situation; too much interference from the stage lightning. (They actually tried other solutions, like Kinect, before switching to Myo!)
Hey Roritharr! I'm one of the co-founders of Thalmic, and I want to thank you for your feedback. We actually don't handle the credit card info ourselves - all payment processing is done through Stripe (https://stripe.com/ca). My apologies that this fact wasn't made clear on our site, and we're working to fix that right now!