Lie detector 'secrets' 20! Most people dont know their tax dollars are helpng to make polygraph more accurate every year. See ALL the short videos in this series before you or a family member takes a test-- expert advice in our other clips on how to get the best accuracy. #liedetectortest #polygraphsecrets #polygraphadvice #liedetectorsecrets #liedetectoradvice #polygraph #liedetector #relationship #infidelity #theft