Throw off the machine's reading of the control questions by changing your blood pressure and heart rate. It?s difficult to do, but with practice, the next few methods and countermeasures will prompt your body to do so. Do some of the following when replying to control questions:
* Develop a breathing strategy. Throughout the test (except during control questions) maintain a normal breathing rate of 15-30 breaths per minute. Do not breathe too deeply. Then alter breathing rate with control questions. You can make it faster or slower, you can hold your breath for a couple of seconds after an exhalation, or you can breathe more shallowly, for example. Do this for 5-15 seconds, and return to your normal breathing pattern before the next question. As explained above, the polygrapher will compare your physiological responses to control questions to your responses to relevant questions. If the deviation from normal during control questions exceeds the deviation from normal during relevant questions, you will pass. If, however, you react more to a relevant question than to control questions, the polygrapher will perceive (rightly or wrongly) that you are lying in response to something relevant?you will fail the polygraph.
* Do math in your head. During control questions do something mentally complex. For example, count backwards in your head as quickly as possible or do some quick long division, as you are answering the question.
* Think about something exciting or frightening; think of things that make you ecstatic, fearful, or frustrated.
* Bite your tongue. Bite the side of your tongue hard enough to cause pain, but not so hard as to draw blood. Practice this in a mirror to be sure the polygrapher cannot detect it. This is highly effective, but may be detectable if you have to speak for an extended period, because you can?t bite while you?re speaking. Only use this method if you can give a quick ?yes? or ?no? response, which, luckily, will be most of the time.
* Insert a small nail or tack in the toe area of your shoe and press down on this during the control questions to elicit a pain response. This is a sound method, but it is easily defeated if the polygrapher asks you to remove your shoes.
* Contract your anal sphincter muscle when a control question is asked. While also highly effective, this method may (or may not) be discovered with the use of pressure-sensitive seat pads that are now commonly used.
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Last two are intresting
Wondering if anyone is going to try this on the new NBC show to win $500,000.
Do you think it will work?