At the federal level alone, the polygraph is used extensively in counter-intelligence, counter-terrorism, and counter-narcotics programs in addition to criminal investigations, intelligence operations, presidential protection and nuclear materials containment. There are at least 68 countries world-wide where the polygraph is used for similar applications. The FBI, CIA, U.S. Secret Service and the National Security Agency are just some of the government agencies which use polygraph testing for a variety of subject matters and issues.

In the private sector, polygraph is used extensively by individuals, families, therapists, attorneys, courts, business and many other entities. Just some of the entities which use polygraph testing are:

	Private Individuals		Police and Fire Departments
	Families and Teenagers		High Schools and Universities
	Commercial Businesses		Financial Institutions and Banks
	Therapists and Counselors		Investigative and Detective Agencies
	Law Firms and Courts of Law		Government Agencies and Institutions
	Department of Children and Family Services		National Television and Radio Stations