Why not bring in applicants for goverment jobs and have them sit in a chair that has been secretly hooked up with highly sensitive sensors, this chair would be capable of sensing changes in respiration pulse and preseration then have children enter the room or have border-line child provocative pictures in the interview room. continue subjecting person to multiple interviews, develop a baseline, use children, attractive adults and others to gauge or test people for pedophilia or even pictures of foreign countries or foreign flags?