Unbelievably, during the 1960s the Canadian government funded research into a means of detecting homosexuality. What was this machine called?

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The machine was derogatorily named the "fruit machine." It was part of a campaign to identify and eliminate homosexual individuals from the civil service, the military, and other government jobs during the Cold War era. The machine was supposed to measure the pupil dilation of subjects looking at same-sex erotic imagery, operating on the flawed assumption that this would reveal their sexual orientation.

Unbelievably, During the 1960s the Canadian Government Funded Research into a Means