Jack Ursitti, age 7, plays Mario Kart on a Nintendo Wii with his teacher Sarah Hoey, of the Nashoba Learning Group, in his home in Dover, Mass., on Monday, July 25, 2011.  Jack has been diagnosed with autism.  After school at his home, Jack works with his teacher and a therapist to do educational and independent leisure activities...Jack Ursitti wears a small GPS ankle bracelet at all times in case he runs off from his family or caretakers. The device will be activated if he goes missing, allowing police and other searchers to find him.