BOCA RATON, Fla. - A teen engineering prodigy who gained national attention in 2002 when he and his family received identification chip implants on live television was killed in a motorcycle accident, authorities said. Derek Jacobs, 18, lost control of his motorcycle early Saturday and crashed into a guardrail and a pole, the Palm Beach County sheriff's office said. He was wearing a helmet. "It was just a crazy accident of a bump or something, and he was catapulted," said his mother, Leslie Jacobs. "He had, of course, potential, because he was brilliant, and he was just a wonderful son....