Smoke Detectors May Also Hide 'Pinholes': How to Use Your Phone to Prevent Covert Filming Indoors
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A hidden camera was discovered in a smoke detector at a beauty clinic in New Taipei City, prompting a police investigation. Due to their small size, pinhole cameras are easily concealed. The article recommends using a mobile phone's flashlight function to check surroundings in places like hotels and changing rooms to prevent covert filming.