Based on the research and innovations of Professor Voight and Doctor Kampff, this device registers certain fluctuations of the subject's responses to questions in order to determine their natural intent. The League is very anxious to test subjects to explore the possibilities and data this unit has to offer.

Paired with "The Soul Tester," this unit will verify that the subjects are answering questions to the best of their ability and with the utmost truth. The League anticipates this device will be quite popular at all the best Parlor nights, seances and suspect interrogations.