Many polygraphers in California and New York also take the private investigator license tests

Many polygraphers in California and New York also take the private investigator license tests and then set up related concurrent businesses.

Although not as high per hour income as lie-detection produces, private investigation is a good companion business to polygraph, and it is usually a steady income stream.

But passing the test is quite a chore. California & New York private investigator license examination test study material and sample test questions from www.PIcontinuingeducation.com can fill in the blanks of the information needed to pass.

Note: many people looking for lie-detection help first contact a private investigator, assuming that is who offers polygraph to the public!