like machine on which he is being  tested is branded as V K mk1. V K stands for Voight Kampff, the test  used in "Do Androids Dream of Electric Sheep" (a.k.a. "Blade  Runner") by Philip K. Dick (qv), where the test is used to measure  the response time and the involuntary reaction of the pupil of the  eye, in short, an emotional reaction to determine whether they are  humans or androids.