For learning to cheat a lie detector a police officer was given two years

On Tuesday, a US court sentenced a 69-year-old ex-policeman and polygraph expert who began to use his knowledge in the interests of criminals and unscrupulous officials. The former law enforcement officer began to teach everyone to deceive the lie detector.

By decision of Judge Vicky Miles-Lagrange, the former Oklahoma City police officer Douglas Williams will spend two years behind bars.

Williams worked as a police polygraph examiner. However, he later lost faith in the fact that such an examination is an important proof and came to the conclusion that a liar with the help of certain tricks can deceive the polygraph.

Retiring from the police in 1979, Williams later created the Polygraph.com site and began offering training services to deceive the lie detector, which he called the most sophisticated fraud in history.

Williams is the author of the book From Cop to Human Rights Defender. He also gained fame as a polygraph examiner, appearing on television on the Discovery Channel and NBC's Dateline.

According to the state prosecution, Williams broke the law when federal agents working undercover became his clients. One of them was posing as a former jailer who allegedly had sex with an 14-year detainee and supplied the arrested with drugs. He asked to teach him to hide information about his criminal record in order to pass a lie detector test and get responsible work in the border service.

And another agent said that he, being an employee of the special services, was involved in drug smuggling into the territory of the United States and was threatened by a prosecutor’s check.

After the arrest, Williams first denied guilt, but in May 2015 of the year confessed to several instances of fraud and an attempt to change his testimony. He also stopped distributing his books and DVDs with information about the lie detector's deception technology.