Backster School of Lie Detection is now owned and operated by Limestone Technologies Inc. Limestone Technologies is dedicated to the continuation of training excellence that examiners have experienced since 1959! The Backster School of Lie Detection is dedicated to teaching the most up to date and validated polygraph techniques according to research conducted by the American Polygraph Association. Backster students will also have the unique opportunity to learn directly from the Grand Master and Father of the Modern Polygraph Technique, Cleve Backster, through numerous audio/video sessions that were previously recorded. We are the school of choice for numerous countries, for both private and law enforcement training, including: Australia, Bulgaria, New Zealand, Canada, El Salvador, France, Germany, Guatamala, Israel, Iran, Jamaica, Panama, South Korea, Lebanon, Mexico, Saudi Arabia, South Africa, Taiwan, United Arab Emirates, United Kingdom, Scotland, etc.