Canadians may have a radically different take on your headline!!!

http://www.wikipedia.org/wiki/Fruit_machine

Fruit machine was a slang term for a device that was supposed to be able to identify homosexuals. The subjects were made to view pornography, and the device measured the pupils of the eyes, perspiration, and pulse for a supposed erotic response.

The other meaning is also listed, with a British origin - which would explain why I never heard it before.