Martin suggested that when conducted properly, polygraphs are correct 98% of the time, but no scientific evidence has been offered for this. The history of the polygraph is the subject of the documentary film The Lie Detector, which first aired on American Experience on January 3, 2023.

Essentially, a home lie detector test is too basic an instrument to provide an accurate result for lie detection. It is unable to accommodate individuality and only provides one element of lie detection when this is actually a very developed and evolved scientific and technical process.

Trained polygraph examiners administer lie detector tests for a fee. The typical cost is between $200 and $2,000. The specific cost usually increases with the length of the test. This means an all-day test will be on the high end of the cost range.

Through scientific studies conducted with EyeDetect, specific physiological changes have been shown to be similar among liars. This means EyeDetect can be an effective lie detector test. In fact, it is the most accurate lie detector today. Note: There is no perfect lie detector test.