Okla. Stat. tit. 59, § 1457

It shall be unlawful for any person, including a city, county or state employee, to administer polygraph or other examinations utilizing instrumentation for the purpose of detecting deception or verifying truth of statements or to attempt to hold himself out as a polygraph examiner or to refer to himself by any other title which would indicate or which is intended to indicate or calculated to mislead members of the public into believing that he is qualified to apply instrumentation to detect deception or to verify truth of statements without first securing a license as herein provided.