Could implantable RFID chips or radio frequency identification tags – currently in widespread use in retail industry – be used to surreptitiously track and control people? Richard speaks with several researchers who believe RFID chips present a serious threat to privacy and civil liberties. A professor of computer science and skeptic argues that fear of RFID chips is rooted in paranoia, not scientific fact. Further, he maintains RFID chips do not have the capability of long-range surveillance.