The Voight-Kampff machine (or device) is a fictional interrogation tool, originating in the novel Do Androids Dream of Electric Sheep? where it is spelled Voigt-Kampff.
Ready Player One History
The Voight-Kampff machine is found in the template of any Tyrell Building, and is used to reach the Second Gate. Unless said building is changed, there's five security checkpoints to pass, and about 50 NPC guards.