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How to check for spycams

Spycams are becoming harder to spot.

This is because some of their lenses can be as small as five-cent coins, while others can be concealed as a shirt button, disguised as a car key or even hidden in smoke detectors.

Some spycams come in pinhole variations, which can be hidden in shoes, pens and even hangers.

But private investigators and security companies The New Paper spoke to said that while spycams can be hidden, they are not impossible to detect.

Mr Marcus Tan, 49, the managing director of Eureka Plus, which sells hidden cameras, said: "The cameras are not invisible. Some still need power, so all you have to do is look for a link to the power source.

"Those that run on batteries can also be detected. There are telltale signs, such as flickering lights, sounds and interference."

Mr David Ng, 38, a private investigator with DP Quest, said: "The lenses of spy cameras are the same size as the tip of a pin and that's all that needs to be exposed.

"But the cameras themselves are not that small, and need to be concealed within larger items, such as hangers and pens."

He added that the cameras can be found by rummaging the place and using detectors, but the chances of finding them are low.

"Detectors may not always work, but they can detect some hidden cameras," he said.

Devices such as infrared detectors, which are sometimes costly, can be used to detect hidden cameras by using reflections off the lenses.

The alternative would be hidden camera detector apps which can be downloaded onto phones, but the reviews of such apps have been poor, with many giving them a one-star rating out of five.

Mr Ng advised shoppers to do a quick sweep of the changing room for suspicious items before using it, but admitted it may not always work.

"Instead of finding the actual camera, it's easier to just cover up or remove suspicious objects," he said.

"But even then, there is no foolproof way to detect or cover up all hidden cameras."- David Sun