news

한어Русский языкEnglishFrançaisIndonesianSanskrit日本語DeutschPortuguêsΕλληνικάespañolItalianoSuomalainenLatina

recently, a blogger in shijiazhuang was surrounded by many people while looking for hidden cameras in a hotel. a blogger who claimed to be in the security industry said that many netizens used mobile phone cameras to find reflective red dots, which was unreliable. on the 27th, upstream news reporters consulted a number of professionals on this matter. professionals said that when using mobile phone cameras to search for hidden cameras, detection may be missed in several situations.

in a b&b in shijiazhuang, a secret camera was installed at the connection between the air conditioner and the pipes. network diagram

the reporter discovered that on june 19, 2019, cctv news had published the article "how to discover hidden camera equipment?" the title "mobile phone troubleshooting method to detect infrared light cameras" reports on how to use mobile phones to find hidden cameras. according to reports, 12 items, including cartoon pendants, lighters, sockets, hooks, smoke alarms, sneakers, drink cans, shower gel, tissue boxes, toothbrushes, routers, and pens, are most likely to become carriers of hidden cameras. "after entering the room, close the curtains and turn off the lights, then turn on the phone camera, keep your eyes on the phone screen, and carefully scan around the room where cameras may be installed. if there are light spots on the phone screen, it may be as for the location of the pinhole camera, you should quickly turn on the light to check it. because this pinhole camera is equipped with an infrared sensor function, it will emit infrared light for supplementary light in a dark environment, so it can be detected using the camera function of the mobile phone. "

cctv news once introduced the use of mobile phones to detect infrared cameras. video screenshot

mr. xu, a senior consumer electronics expert, told upstream news reporters that the above-mentioned detection methods have a certain scientific basis. "the infrared camera has been emitting infrared light that is invisible to the naked eye. as long as the exact location is found, it can indeed be photographed with the mobile phone camera, and it will appear as a flashing red light." he also said that when it comes to finding hidden cameras, apple mobile phones are easier to use than android phones, "because apple phones integrate infrared lenses in the face id recognition program, and it is easier to detect infrared cameras than android phones."

"ji baiyu", a blogger who has been in the security industry for more than ten years, said that the method of "using a camera to find the camera red dot" has its rationality, but it also has certain limitations. he told reporters: "every electronic device will have reflections, so there is a scientific basis for using mobile phone cameras to find lenses. but for those cameras without infrared lights, this method is not easy to find. the simplest and most convenient method use a flashlight to observe all the holes facing the bed at close range, including socket holes, routers, smoke detectors, air conditioning vents, etc. if you can find reflections, it means there is basically a camera.”

he zhihui, who has been engaged in anti-eavesdropping work for more than 10 years, runs a company called "antebao" in shenzhen. he also said that using mobile phones to find hidden cameras has certain limitations, and detection may be missed in several situations. "it cannot be said that it is unreliable, but it is likely to cause missed detection. this method mainly detects the infrared light emitted by the camera. if a pinhole camera with night vision function is installed, it may be easily discovered. however, some pinhole cameras do not have infrared light, so it is difficult to find their reflections through the camera lens of a mobile phone. in addition, some rooms are relatively large, and the reflective highlights are not easy to be found at a long distance. in addition, the camera must be facing directly. only the spherical mirror of the pinhole camera can detect its reflection. if the angle is a little off, there will be no reflective highlights and it is easy to miss the detection. "

many candid cameras are installed in very hidden locations. network diagram

how should ordinary consumers protect their privacy? he zhihui said: "if there is a need for prevention, portable detectors are more convenient. the price of such detectors is generally less than 300 yuan and they are small in size. however, they still have the above defects and are easy to miss. the best detection method should be through use thermal imaging to search (the camera will generate heat when working). however, this equipment is larger and more expensive, generally around 5,000 yuan. in fact, i personally feel that it does not protect privacy. it's the responsibility of the consumer, but it's the responsibility of the hotel. just like when people go out to eat, the quality of the food should be controlled by the restaurant. when we stay in a hotel, i think the hotel and b&b industry should be responsible for it. staff are obliged to prepare such a detector, which can detect a room in just 2 minutes, completely eliminating hidden camera incidents. in fact, now is an opportunity. if the hotel's security service level is improved in this way, i believe we can gain more consumers. recognition.”

hidden cameras can be found relatively easily with professional equipment. network diagram

on the 27th, upstream journalists searched multiple e-commerce platforms and found that many merchants selling camera detectors had good sales. take the "haix creative accessories store" as an example. the store has a detector of a certain brand priced at 278 yuan, and the total sales volume has exceeded 20,000 units. this "multi-function detector" is known as "anti-theft, anti-candid photography, privacy and security guardian". customer service told reporters, “this is a broadband upgraded version of the detector, with a built-in highly sensitive smart chip that can actively search and capture wireless signals transmitted by cameras, monitors, and locators. some cameras that are not connected to the internet require you to use infrared scanning to manually conduct investigation of suspicious places. two modes are available to safely investigate the surrounding environment.”

upstream news reporter jin xin