It's in the trial stage now at one facility..I believe in new York..if memory serves. This arm band or wrist band delivers quite a whopper of a shock. One reporter was shown getting shocked by one. She said it was like getting stung by several bees at a time. My worry: is this wise to adopt as a method of stopping children from acting out in school? Or is this a form of abuse? The thing is: the same shock is given to a 5 yr old that is given to a 16 year old. There isen't even a measurement system in place.