exceedingly difficult to measure, as the change was often smaller than one millimeter. The idea was based on a study done by an American university professor, which measured the sizes of the subjects' pupils as they walked through the aisles of grocery stores. In popular culture Brian Drader's 1998 play The Fruit Machine juxtaposes the fruit machine project with a parallel storyline about contemporary homophobia. Sarah Fodey's 2018 documentary film The Fruit Machine profiled the effects of the project on several of the people affected by it. See also Lie detector polygraph, a device to detect the physiological responses indicative of lying Lavender scare GCC homosexuality test Gaydar Penile plethysmograph Vaginal photoplethysmography Voight-Kampff machine, a fictional device that detects non-human emotional responses Notes Sources Gary Kinsman et al.,Whose National Security?: Canadian State Surveillance and the Creation of Enemies, (Between the Lines, Canada, 2000) ,chapter 10. John Sawatsky. Men in the Shadows: The RCMP Security Service. (Doubleday Canada, 1980) , chapters 10 and 11. CBC Radio 1 The Current, 9 May 2005 Gary Kinsman, "'Character Weakness' and 'Fruit Machines': Towards an Analysis of the Anti-Homosexual Security Campaign in the Canadian Civil Service," Labour/Le Travail, 35 (Spring 1995). External links What About Freud? Canada's New Cold War History The National Security Campaigns Fruit Machine – radio interview. CBC Radio 1 The Current, 9 May 2005 (begins at 2:25 into clip) Homophobia LGBT rights in Canada LGBT history in Canada Law enforcement in Canada Legal history of Canada LGBT terminology 1950s in LGBT history 1960s in LGBT history Gay history Persecution of LGBT people Pseudoscience