A device used to record physiological responses is offered for purchase. These instruments are designed to measure and document indicators such as heart rate, blood pressure, respiration, and skin conductivity during questioning. Potential buyers might include law enforcement agencies, private investigators, or research institutions requiring tools for physiological data collection.
The availability of such equipment enables various investigative and research processes. Historically, these machines have been used to assess the veracity of statements, though their accuracy and admissibility in legal contexts remains a subject of debate. Benefits can include providing investigators with leads, aiding in internal investigations, and potentially deterring deception.