In another thread on this message board a polygraph proponent made overt claims that a new, revolutionary countermeasure detection device was on the market that would mean the end of the 'anal pucker' or sphincter contraction as a possible countermeasure. This revolutionary new device is pictured below:



It is described thusly: (fair use quote)

Quote:


Now, I knew from personal experience that this 'sensor array' is a complete and utter sham. My highly trained polygraph interrogator had these sensors positioned on his interrogation chair and even strategically placed me in a seat at an acute angle to The Chair during our pre-test interview so that I might drink it all in. I admit some trepidation as I began my employment of countermeasures, but said trepidation gave way to utter calm as the test progressed. I puckered like I've never puckered before, and passed with flying colors. I was deemed 'strongly non-deceptive'.

Still, as others have cautioned on this board, one cannot infer from personal experience that all who use this c/m will pass. 

Actually, I hear the latest in anti-anal picker countermeasures is the new DIGITAL ANAL PUCKER DETECTOR.  The polygraphist sits next to you and inserts a digit (usually the index or middle digit) while administering the test.  I'm told it's very effective at detecting the pucker.