Warning: This story contains some offensive language
So-called spy-cam porn has existed in China for at least a decade, despite the fact that producing and distributing porn is illegal in the country.
But in the past couple of years the issue has become a regular talking point on social media, with people - particularly women - swapping tips on how to spot cameras as small as a pencil eraser. Some have even resorted to pitching tents inside hotel rooms to avoid being filmed.
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I suppose you could theoretically utilize the flash functionality in an attempt to catch some sort of glare/reflection back from the hidden camera’s lens… maybe? This is just a guess, however, tbh, and I have my doubts of its efficacy against the borderline frighteningly tiny lenses in use on more modern equipment that is designed specifically to be hidden. The pricier gear could (potentially) even utilize special coatings or treatments intended to mitigate such a detection method for that matter, as there’s clearly no shortage of money surrounding the… “industry,” for lack of a better term.
I certainly wouldn’t consider it a reliable test, that’s for sure