I heard that some devices can prevent eavesdropping and this is true

There are equipment to prevent eavesdropping

More precisely, this is a technique called “scrambling”, namely jammers and jammers. With the popularity of mobile phones, this interference has become popular among the public.

Interference is a device that interferes with radio waves used in communication devices such as mobile phones. When this kind of interference occurs, it interferes with radio waves emitted by mobile phones at a certain distance from the device.

Places that are susceptible to interference include concert halls, movie theaters and hospitals where the use of mobile phones is restricted.

Recently, signal jammer has been installed around bank ATM machines, which are often used to prevent transfer fraud. Many people may be familiar with this news.

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Moreover, this interference is an effective preventive measure to prevent the use of radio waves for eavesdropping.

Interference can also prevent eavesdropping

You can use scrambling to block listening. Several scramblers are commercially available and can be purchased by the public.

Jammers can be divided into two types.

Types of blocking/blocking radio waves

Types of hard to hear

There are two types of phone scramblers: one that blocks radio waves and causes interference, and one that makes speech difficult to understand. You can use any of them to stop eavesdropping.

You can use a single encryption machine the same size as the apartment room to protect your privacy, so as not to be eavesdropped. Therefore, it can be expected to be an inexpensive method to prevent eavesdropping.

However, this method of preventing interference requires some precautions to be kept in mind.

Notes on using interference

Cannot completely prevent interception

There are two types of scramblers, but neither can completely interfere with listening.

The performance of 3G/4G mobile phone jammers that the general public can buy is very limited, and the type of blocking/blocking radio waves can interfere with radio waves up to 2.4Ghz, but cannot block radio waves beyond this range.

Also, the type of sound that is hard to hear does not mean that you can mute it by completely muting your voice, as the name implies.

You may need a license to use the scrambled device

Some models send mobile phone interference signals. This powerful interference radio can only be used with the permission of a third-level professional terrestrial radio technician.

If used by an undocumented person with interference model qualifications, a violation of the Radio Law will result in severe penalties.

Even if you block the interception of spies, it will interfere with the communication of the phone, so it is difficult to hear or hear the communication with the phone. There is a danger of touching people.

You will not be caught in commercial facilities or public transportation

Blocking commercial facilities or public transportation violates the Radio Law.

Even if it is unethical to use a mobile phone on a bus or train, do not bring the jammer into the car, but only use it as a jam avoidance device.

In order to prevent eavesdropping, there are plans to install interference in the home or office, but there are restrictions where interference can be installed and where interference can be used.

Jammer-mart’s mobile phone signal jammer is recognized by consumers

Many friends who use mobile phones have this kind of distress, that is, the signal of the mobile phone often has problems. Especially friends whose home is in the country, can’t chat online all day long. But after some friends used Saiyue Communication’s cell phone jammer, this problem was completely solved.

mobile phone jammer GSM

Whether it is a branded mobile phone or a copycat mobile phone, they often encounter poor signal problems. The cell phone signal booster of Saiyue Communication was born under this situation. This is a cross-age product, so it is very popular in sales. Whether online or in physical stores, many consumers are buying.

But at the same time, there are also many companies that seize the tricks and follow the trend, all of which are producing mobile phone signal amplifiers. This is because with the increase in mobile phone users, mobile phone signals have received serious interference. Because Saiyue Communication itself is a well-known company specializing in the production of mobile phone signal amplifiers. Now everyone in the industry knows that if you want to have a good mobile phone signal amplifier, you must choose Saiyue Communication. This is a testimony of strength, and also the affirmation of industry insiders and consumers.

Mobile phone signal interference in urban village rental houses helps to rest

The shadow behind the splendor of every big city is the village in the city. For example, there are many large and small urban villages in Guangzhou. Shipai Village is the largest and oldest among them. People’s first impression of urban villages is crowded, noisy, and a lot of garbage. The alleys are densely packed, with wires and spider webs crisscrossing overhead.

Because the village is too dense and surrounded by high-rise buildings, the village in the city has a weak signal or even no signal at all in addition to being dark and humid. However, most of the people living in urban villages are fresh graduates or young people who have come to the city to struggle. The lack of mobile phone signal is very difficult for young people to accept. The lack of mobile phone signal not only affects their social activities, but also affects their job prospects. Therefore, many renters hold a mobile phone when they look at the house, and when they come in, if there is no signal in the house, they immediately shook their heads and left.

armband signal blocker

So, how to solve the problem of bad mobile phone signal? The cell phone jammer is a wireless communication device, which is different from general electrical installations. It may seem simple to install such wireless communication devices, but there are many knowledges in it:

1. First of all, before installing the equipment, fully test the signal and electromagnetic environment to determine the type of equipment, wire and antenna to be selected. To complete this work, it is difficult to do without relevant instruments and professional knowledge. Many people did not understand the reason and bought the equipment and materials at will, but the results were ineffective, and money was wasted.

2. Secondly, during the installation process, there are certain tricks in the design, layout and connection of the circuit. The same equipment and materials, let professional and technical personnel and ordinary electricians to install, the effect will be different, let alone ordinary people.

3. Once the equipment is installed, it needs to be debugged carefully. Equipment debugging is a complex and professional work, which is often far from perfect, and it is difficult for it to be a professional.

4. Finally, the current mobile phone signal amplifiers on the market are mixed, and most of the products are not guaranteed in quality. Many machines only have amplifier circuits, but there are no quality control and anti-interference control circuits. It felt good at first, but it didn’t take long to get worse. Such an amplifier is not only easily affected by environmental changes, but also has a great impact on the surrounding electromagnetic environment, and even interferes with the normal operation of the base station.

At present, many rental houses in urban villages have installed cell phone signal amplifiers, but most of the owners buy them and install them by themselves. In addition, because of the desire to be cheap, the quality of the equipment purchased is very poor, so the signal effect is not good. How many companies have made the outdoor signal environment more and more complicated.

Telephone jammers are necessary for a good environment for important meetings

We’re tired of being interrupted, especially in important places, and I’m tired of the phone ringing. He was very angry when the leader was chairing an important meeting and was interrupted by the ringing of the cell phone. The frequency jammer is used in the conference room so that the conference has a good environment.

With the popularity of cell phones, cell phone ringtone makes people more tired, especially in some quiet public places. In many places, cellphone use is prohibited as it affects others, affects others to rest or work, and even affect the websites such as the use of the instrument and the moderating effect of cellphone. While there are clear instructions on how to ban cell phone use, there are a lot of people in these places using gas stations for example, as we use cell phone at gas stations is dangerous and probably caused the explosion.

We should know that the important national meeting will last for many days. The content of the meeting must be kept strictly confidential and must not be interrupted by the outside world. Therefore, the mobile phone is prohibited. Not only is this a national meeting, but it was also adopted at a series of corporate meetings where cell phones were banned and cell phone blockers were gradually installed. What do you think is reasonable about Office installation of the cell phone jammer?

Not only are cell phones banned in gas stations, but many public places are starting to ban them. It may also be banned in some private places. We have heard of cell phone jammers being used in schools and cell phone jammers being used in prisons to disable cell phone signals and protect prison security. What about the conference room? Have you seen any examples of this? With people increasingly relying on cell phones, many companies are starting to install an adjustable device in the meeting room. The cell phone jammers will be held in the meeting. The meeting leader conducts the meeting properly without the ringtone intervening. opens and adjusts the disruption area in the conference room. This not only affects the normal use of the outside, but also provides the environment for the meeting.

If the ringing of a cell phone interrupts the speaker’s thinking at an important meeting, it will upset them and distract attendees from the meeting. The cellphone in the meeting room with important rings is rude behavior. Therefore, in many meetings, before the prompts begin, the phone will shut down or put into mute state. Many companies are not allowed to take cell phones with them while attending the meeting, visible on cell phones in the Internet age, the use of cell phones is regulated more and more clearly.

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If you’re part of a conference, how do you feel when you hear your cell phone ring frequently during meetings? I think you will be as mad as I am, dissatisfied with this behavior, and even berate the owner of the phone. This is an unfortunate ending, not what we want to see. To avoid these unpleasant results, the conference room to use portable jammer is very important. There are many advantages to using in the meeting room, as you can see above, to prevent the uncivilized phenomenon from occurring. There is not only a ban on cell phone ring tones, but also a ban on cell phone use during the period.

If you’re a boss, you need to attend the meeting often. A cell phone rings or someone is looking at a cell phone in the meeting. Then you can prohibit the use of the cellphone by installing a cellphone signal jammer. It can now be bought in our store www.jammer-shop.com, which will make you more accessible and respected for the staff.

Pros and cons of mobile phone signal jammer

Nowadays, with the rapid development of science and technology, traditional mobile phones are becoming more and more intelligent, and they have become an important communication tool indispensable in people’s daily work and life. Of course, the negative effects caused by mobile phones are also immeasurable. Negative impacts in special scenarios and specific times have become new leak channels and new criminal methods, posing a threat to the security of confidential information. Therefore, it is urgent to strengthen the management and standardized use of mobile phone signal blockers.

Mobile phone signal jammers are mainly used in places where no mobile phone communication is required, such as in various examinations, office premises of confidential departments, gas stations, etc. Because of their easy installation and simple use, more and more companies use signal blocker. And the equipment signal is always in a relatively static state, which will not interfere with other electrical equipment, and has played a certain role in some special places.

GPS signal jammer

The mobile phone signal jammer is also called mobile communication jammer, mobile phone signal isolator, conference security device, etc.The signal jammer transmits a strong signal consistent with the frequency of the mobile phone’s downlink frequency band, and is tuned with the signal sent by the base station to the mobile phone, so that the base station sends to the mobile phone The downlink signal is deformed and cannot be recognized by the mobile phone, which interrupts the connection between the mobile phone and the base station. Simply put, its main function is to make the phone unable to use normally. Its essence is to implement electromagnetic interference to the wireless network on which mobile phone communication depends, so that the mobile phone cannot access the network, and thus cannot receive information from the mobile network, and cannot send information through the network.

However, with the promotion of signal jammers, it has also brought some adverse effects. The wide use of signal jammers will interfere with the normal use of surrounding residents, causing residents to use mobile phones without signals. If the shielding range is shortened, there will be a lot of It is also difficult to control the blind angle and blind zone, the shielding edge distance, and the long-term coverage is wide, the power will be large, and the radiation generated will also affect the human body. Therefore, the quality of a mobile phone signal shielding device depends not only on the The effective shielding degree of mobile phone communication signals, but also whether the radiation pollution produced by it meets the national electromagnetic radiation protection standards

Especially in government agencies, once the staff of the agency accidentally leaked the content of their work, they could easily be stolen by illegal elements. This is a very dangerous thing for agencies and agencies. In order to prevent such incidents from happening, government agencies will be equipped with mobile phone signal jammers or mobile phone signal shielding cabinets to avoid leaks.

Mobile jammers can prevent Apple phones from monitoring us

Mobile devices such as smartphones and tablets are considered really dangerous devices because they contain a large amount of our private and sensitive information and have the ability to monitor us. There are many types of exploits and specialized mobile applications that can damage information stored on smartphones or tablets. By the way, the number of malicious mobile applications is increasing and the Android operating system is the leader among them. However, two issues remind us that not only is Android dangerous, but iOS is dangerous as well. We have come across a lot of articles, people said that the iPhone and iPad can monitor us, and these functions are preset by the manufacturer. But the cell phone signal jammer website sells a jammer which can protect the signals of cellphones, which can protect our cellphones very well.

Cell Phone signal Jammer

They said that iOS may contain Trojan horse applications that can collect and analyze user information, create photos and videos, and send all data to third parties. We can tell you on jammer-shop.com that this sentence is really not very clear, because in order to prove these words someone has to decipher the source code of iOS, which is the intellectual property of Apple Inc., and decipher it illegally.

But at the same time, there is a way to steal photos and video data from devices running iOS 6. The vulnerability is exploited in Safari browser. As long as it supports HTML5, criminals can use simple HTML code to steal data from it. This forces users to perform certain activities, but the backdoor exists. We hope it will be fixed in a future update. And the vulnerability does not require Flash or Silverlight plugins, so its range of use can be very wide.

It’s also worth mentioning that in September 2012, a hacker community called “anti-security” claimed that Apple was cooperating with the CIA and the FBI. The community also told them that in March 2012, they had hacked into a Dell Vostro laptop belonging to FBI agent Kristoffer Strangle. They found a file “NCFTA_iOS_devices_intel.csv”, which contained over 12 million unique device identifiers (UDIDs). Which UDID is related to device name, username, address and phone number. Isn’t that awful?

The FBI has officially denied the information, but independent experts have proven its authenticity. Hackers posted this information and many people found their names and devices on this list. Therefore, there are rumors that Apple’s gadgets might spy on us, which doesn’t seem strange and can’t prove it.

Another interesting fact here is that the unnecessarily collected photo and video information can be obtained through positioning data. Now, thanks to the integrated GPS / GLONASS module and the triangulation of the mobile phone tower, they can know the coordinates of each photo and even follow your position in real time. Thanks to the new positioning technology, you can see your position even in indoor areas where GPS is not available.

The realization of such data is possible thanks to the NAVSEA project developed by the army and the University of Indiana. This technology makes it possible to create a high-quality 3D model of the room where the phone is located. This is possible because the data from the accelerometer and the built-in compass are merged with the image itself. This model is much more useful for stealing sensitive data than a set of miscellaneous images.

Therefore, your mobile device may spy on you. Android already has several very dangerous applications, and now iOS has become fragile. It’s really hard to tell if the iPhone and iPad are spying on us, but it is best to consider protective measures before the danger arises, so it may be better to use a cell phone signal jammer. GSM / GPS to avoid tracking and avoid interference. Attempts to hide data transmission.

Can the test signal blocker block all communication signals?

Can the signal blocker block all communication signals? Having said that, many people are a little unfamiliar with test signal jammers. In fact, it has been widely used in the college entrance examination room. In the college entrance examination last year, many examination rooms were equipped with this kind of equipment. The response was very good. Practice has proved that this method has a good effect on eliminating electronic signal cheating. Starting this year, it has been vigorously promoted to allow more examination rooms to be equipped with this shield.

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The emergence of shielding devices now solves many hidden dangers that disrupt the order of the examination room, allowing candidates to take the exam in a fair environment. The principle of the test signal shielding device is to disable the communication signal of the mobile phone by isolating the electronic signal, thereby preventing the use of the mobile phone to cheat. Not only that, it also has a good shielding effect on WIFI2.4G signals. Generally speaking, the effective range is within a radius of 0 to 30 meters. Generally speaking, a low-power test signal shielding device is sufficient to cover the entire classroom. It satisfies the test room’s requirement for shielding signals. Since the battery life of the device is generally three hours, although the heat dissipation is not good, it also leads to a particularly high cost performance, which is especially suitable for schools to buy test room signal shielding. Worry about buying test signal jammers is a common problem for many customers. At this time, you can contact Shankino and ask about the price of the test signal jammer. It is a manufacturer with many years of high quality and rich experience in research and development of shielding devices. With a first-class technical team to provide technical support for product quality, it is favored and selected by customers.

Robots with cameras are very dangerous

The robot industry is one of the cornerstones of modern technological development and global progress. In this field, not only amateurs, but also professionals, there are many innovative thinking and enthusiasts. One of them is the famous iRobot company, which made a lot of cool robots, such as iRobot Warrior or iRobot Roomba. Therefore, the IEEE visited the video from its headquarters and found out many different and interesting things about the technology and development of iRobot robots.

These robots can be autonomous or remotely controlled. They also have many different skills and functions. For example, many robots are created from inspiration from nature. They are crab-shaped and can move over different terrain to adapt to the surface. Or there is a worm-shaped iRobot, which can work in a working oil rig, move around tight places, and reach places that are inaccessible to people.

With iRobots, you can move around difficult conditions (like nuclear power plants) after accidents or other environments that are extremely dangerous for anyone. There are also very few types of iRobots that can mimic human emotions and even facial expressions (remember Japanese robots).

The next category of iRobots is exploratory. For example, some robots can climb any type of wall or other vertical surface: glass, wet surface, smooth surface or any other surface. They use suction cups and push air into them to do the job. In addition, they can withstand a good weight, like 6 packs of soda, while the size of the robot itself is small. Imagine how many devices it can carry!

There are many different sensors on iRobots. They may realize that someone or something is touching or hitting them, which makes the two things different. According to their sensors, the robot will react. Robots can also react to sounds and distinguish themselves based on sound volume. Additionally, iRobot Roomba can find obstacles to avoid, such as walls or stairs.

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iRobot has also created a small robot that looks and behaves like the Recon Scout XT from ReconRobotics. Soldiers can put them in their pockets, throw them into buildings, and use them for remote surveillance. Or there is a robot that can elongate its “neck” with a camera to a height of 8 feet to spy on high walls and fences. Or there’s another voyeur robot, which is small enough to move under the door like a worm, with a miniature camera on it. If you want to prevent others from spying on you through drone jammer, you can use jammers to prevent others from spying on you.

Although iRobot has fully autonomous self-driving cars (pre-Google cars), most surveillance robots are still remotely controlled by humans, as the full robotic automation technology is military grade and expensive. Additionally, there are iRobots called Swarm (not to be confused with the flying SWARM I wrote before), which can communicate with each other, assign a group leader, and complete tasks as a team. If the leader is arrested or destroyed, he will choose a new one from the remaining robots in the group.

As long as modern robots can do a lot of things like jumping, flying, balancing, etc., almost anyone can use them to hide people who are lost during the day and night. One of them can be you. Therefore, in order to protect your life from evolving threats, you can use jammers on robots which can be adjusted to block all frequencies (Wi-Fi, Bluetooth, standard remotes, GPS, GSM, etc.) that ‘they use.

Analysis of Market Demand of Prison Mobile Phone Signal Shielding Project

With the continuous development and popularization of mobile communication tools such as mobile phones, and the continuous improvement of the technical level of personal mobile communication methods, especially after the promotion and application of 3G, 4G, and 5G technologies, it will be used for prisons, labor camps, detention centers, drug rehabilitation centers, etc. The negative effects of similar areas are becoming more and more prominent. In prisons, detention centers and other supervision places, mobile communication tools such as mobile phones are explicitly prohibited, not only for prisoners, but also for supervisors. Once the mobile phone is brought into the prison and put into use, it will bring great harm to the management, safety and development of the prison. Some prisoners use illegally smuggled mobile phones to make calls, send text messages, obtain information, threaten witnesses, and even form gangs and organize escapes. Because of this, the installation of cell phone signal jammer in prisons and other prison places is imminent. Degree!

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What factors should be considered in establishing a mobile phone signal shielding system

Due to the influence of the base station, the distance between each base station and the prison is different. Generally, it is recommended that there is no base station within two to three hundred meters near the prison area where the mobile phone signal shielding system is installed. Strong influence!

The scale, number of buildings, structure, size, floor height, etc. of each prison are different. The distribution direction, power, and terrain of mobile phone base stations around each prison are different. The strength of mobile phone signals transmitted from remote base stations is also different. There is no difference. How to arrange the points in each prison needs to be designed according to the actual situation!

Even in the same environment, the base station signal is affected by wind disturbance, air humidity, etc., which will cause fluctuations in signal field strength. In addition, there are differences in field strength between indoor and outdoor spaces, and the ground, building structure, materials and metal objects affect the mobile phone. Shielding the signal causes very complex adverse effects.

Cell phone signal shielding systems are installed in prisons. Most shielding terminals are installed in relatively high or slightly hidden locations, and are not detected by ordinary people, but they may not prevent man-made damage. The influence of future human factors must be considered, including prisons. Guilty (also resisted by prison guards) artificially damaging or cutting off the power supply to the jammer,

With the accumulation of working hours, electronic products such as mobile phone signal jammers will also have normal wear and tear. Several shielding points installed in the prison cannot be guaranteed to operate 100% stably every day. As a manager, you should have a set The simple and convenient centralized control system can detect the man-made damage or normal loss of the shielding point in time, and arrange the maintenance and inspection quickly.

What are the advantages of wifi signal jammer?

The development of smart phone wireless networks has a great effect on increasing the speed of development. Mobile phones can solve network problems. Mobile phones play a more important role in people’s lives, mobile communications and mobile Internet, and other aspects. Because of this, it causes a lot of problems, especially in the network, children are addicted to the Internet, which is mainly due to the wifi network. As a result, many gradually began to install mobile phone wireless jammer devices to block the network in order to control the children’s online time.

High tech Phone Wifi interceptor

Although wireless networks are convenient for people to access the Internet, the problems caused by this cannot be ignored. This is not only a problem of accessing the network, but also a problem of network security. In order to maintain a good network environment, many places have begun to install this desktop wifi shield to protect the network security in some places and prevent excessive use of the network. This equipment has been widely used in various countries and regions in the world, and is typical of schools, prisons, libraries, reading rooms and gas stations.

It is necessary to use a Wifi blocker. On the one hand, it can ensure the security of the network. On the other hand, it can also control the time that children use the Internet. Don’t indulge in the virtual world. It is very serious to harm their body and mind. In addition, the radiation of the wifi transmitter will affect Human health is not suitable for long-term use, you can turn on the wifi shield to block the wifi signal.

In general, keeping all shields in an open state for many years is not conducive to energy conservation, environmental protection, equipment maintenance, and shortening the service life of equipment (such as factory areas, canteens, warehouses, etc., are unmanned at night, and there is no need to place these locations. The mobile phone jammer runs continuously 24 hours a day).