Accredit Polygraph Examiner: Trained American International Institute of Polygraph. Member of the South African Professional Polygraph Association (SAPPA). Examiner was also a member of the SA Police Service (Detective) with 19 Years of experience in the investigation of crime and received awards for the Best Detective as well as Best Police Officer. Offer you professional and efficient service. Specialize-Specific Examinations - Theft, arson etc. In-Employment/Maintenance Polygraph conducted every 3-6 months to determine whether or not employees have been involved in unfounded activities with-in the company. Pre-Employment conducted prior to employing possible candidates in order to eliminate those who have been involved with unidentified crimes.