How to prevent miniature cameras

1, mobile phone screening method to detect infrared fill light camera.

Turn off the lights and close the curtains to make the room completely dark. Turn on the camera function of the mobile phone and walk around the room. If you find a red dot on the screen, it may be where there is a pinhole camera. But this trick is only for cameras with infrared fill light, which is useless for ordinary cameras, and now many pinhole cameras don't have infrared fill light.

2. Use a flashlight to find the reflection.

Keep the room dark and shine around with a flashlight. The glass above the camera sometimes reflects light, so that you can see the hidden camera. But there is no guarantee that there will be no fish escaping from the net. Then you can try to do the opposite, don't focus on finding the camera, and let it not shoot you.

3. Make the camera "blind".

Dim the lights, or cover key parts such as TV, bedside table and mirror with bath towel. Ordinary cameras can't get clear images under the condition of insufficient light source.

4. Use sensors to detect electromagnetic waves of different frequencies emitted by pinhole lenses, or buy professional detection equipment.

But this method is not realistic for most people because it is too professional. However, most professional testing equipment is expensive and inconvenient to carry.

Reasons for the existence of miniature cameras

Illegal use of cameras to peek at personal privacy pictures and trade private videos has formed a black industry, and there are problems in every link.

First of all, the production end is the source. The fundamental reason is that the threshold of pinhole camera from design to production is extremely low. For example, Huang Hao, a commentator on 3C Digital, said that many "white-brand" cameras were produced by small manufacturers without brands through other molding schemes. Although there is nothing "immoral" about such a camera, it is precisely because of its low technical threshold that criminals can easily modify and use it.

Secondly, the installation is simple. As a high-incidence place for candid photos, although the hotel is a temporary private space, it is still a public place with complicated personnel. Any tenant, cleaner and waiter has access to the facilities in the house and install pinhole cameras in hidden corners.

Third, signal transmission is easy to be cracked. The camera modified by criminals can directly transmit video wirelessly, while the equipment produced by regular manufacturers generally adopts encryption means, but still can't sit back and relax. If there are security holes in the product, criminals can obtain the video by cracking the network video information flow, making it completely public, leading to information outflow.

Finally, sales are secret and profiteering. From production to transmission, a lot of upfront investment is needed, but criminals are still flocking to it, behind which is the temptation of money. General video can be sold repeatedly, while live video can be watched by many people at the same time, and there is a charge for entering the live room. Moreover, many criminals often change the IP address by jumping when conducting illegal live broadcast, which greatly improves the monitoring difficulty.