INTERNATIONAL Polygraphservice uses CPS II Stoelting Instrument (computerized polygraph) with the lasted technology with eight channels that register physiological changes(two Respiration channels, one cardio channel, one skin conductance/ resistance channel, one plethysmograph channel, one activity channel, one microphone, and one skin potential/ auxiliary).  We use the same technology and techniques employed by the most important intelligence agencys in the world: F.B.I., C.I.A., INTERPOL, D.E.A., etc.