Frye v.United States (1923)ruled that the results of a "deception test," an early version of the polygraph could be used in court if the operator personally testified to the veracity of the results.

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Frye v. United States established the Frye standard, which held that scientific evidence could only be admissible in court if it was generally accepted in the relevant scientific community. The decision did not specifically address the admissibility of deception tests or require the operator to personally testify to the reliability of the results.

Frye VUnited States (1923)ruled That the Results of a "Deception Test