Detective Inspector Neil Corbel, 40, posed as an airline pilot to book models for photoshoots before planting the gadgets in hotel rooms, flats and Airbnbs.
The cameras were hidden in everyday items, including tissue boxes, phone chargers, air fresheners, glasses, keys and headphones, to video his unsuspecting victims for up to four hours.
Married father-of-two Corbel, a former counter-terrorism officer, was caught after a model, who had agreed to pose naked for a photo shoot, became suspicious of a digital clock.
An internet search of the brand name revealed the device was a high-end spyware video-recording device which could be controlled from a smartphone.
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