Category: Tag Cheat

Mobile phone jammer is a device that prevents the transmission or reception of signals by transmitting the same radio waves as mobile phones. It is designed to help people solve various problems related to mobile phones, radio signals and wireless connections. Candidates are accustomed to using some high-tech cheating tools during exams. This is unfair, and it is difficult for the teacher to detect with naked eyes. Therefore, some test centers turn on the cell phone jammer during the exam to prevent the mobile phone signal transmission from the root cause, thereby preventing cheating in the exam.

Hidden WiFi Bluetooth 3G 4G Cell Phone Signal Jammer

Everyone knows that stress can lead to mental deterioration that can endanger their health. It is said that relaxation is the key to a healthy mind and body. Learn to relax, learn to use 4G cell phone signal interference, get away from 4G phone, open your health and good life.

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Desktop WiFi Bluetooth 3G Cell Phone Signal Jammer with Hidden 4G Phone.

As we all know, stress is part of everyday life and cannot be avoided. As the pace of modern life continues to accelerate, we can always feel the pressure from morning to night. It’s hard to slow down. Hence, stress and life are closely related in a highly competitive society. How to Maintain Good Condition? Let me tell you, calmly restore your life, turn off your computer and drop your phone. You will find that the pressure disappears. How it goes? Buy a hidden wifi bluetooth 3G 4G cell phone jammer from this professional manufacturer www.jammer-mart.com and you will fall in love with peace.

However, different people have different views about stress. Some people think that stress is not a bad thing. In her view, a certain amount of stress is important for motivation and life. Others think stress can lead to mental decline and harm their health. According to them, relaxation is the key to a healthy mind and body. Learn to relax, learn to use 4G cell phone signal interference, stay away from 4G cell phones, for your health and a better life.

Desktop wifi bluetooth jammer. And according to the specific situation, the interference distance is up to 15 meters signal strength Interruption GSM GSM DCS PCS 3G WiFi Bluetooth 4G signal At the same time, it is really powerful and versatile to protect your rest of life and meet all your interruption needs. If you feel that the nearby cellphone is disturbing the peace and quiet you need, then you can turn the button on and legally return to the right place.

What can a prison cell phone signal jammer achieve?

If there is no cell phone jammer in the prison

Contraband phones are a terrible problem. They allow prisoners to secretly handle drugs, run illegal businesses and even organize murders, under the supervision of guards and warden. A prison in South Carolina recently discovered 35,000 cell phone calls and text messages in 23 days. This is a very serious problem for prisons.

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The cell phone owned by the prisoner allows him to contact external partners in the crime to coordinate escape plans, thereby creating a life-threatening situation for the agency’s guards and the public. More commonly, reports from correctional facilities indicate that the overwhelming majority of hidden mobile phones were used to harass victims of their crimes, or that a prisoner repeatedly intimidated his victim to persuade the victim to abandon the accusation or change him. Story to instill doubtful testimony.

Many detainees continue to organize illegal drug trade from within the prison walls. Mobile phones are an important means for detainees to keep drug organizations running and tightly controlled. By contacting visitors before they arrive, prisoners can arrange for the transfer of drugs and drug paraphernalia, allowing them to continue the illegal habits of being detained. The family is often harassed by relatives who have been imprisoned, and when the family realizes that their relatives receive better services during detention, they ask for bail.

A prominent issue is the prisoner’s ability to contact witnesses before an upcoming hearing, trial or appeal. By matching the absence or correcting the conflict in the testimony, the defendant can win relief or complete dismissal charges. The frightening concern that the prison considers is the undetected use of cell phones by prisoners in order to warn other prisoners before accidental searches that may confiscate cell phones, knives, drugs, syringes and other prohibited items. Such smuggled goods may cause life-threatening conditions to prison guards and medical staff.

The prison has tried and failed to prevent cell phones from entering the prison. If there is no way to prevent cell phones from entering the prison, prisoners must also be prevented from using cell phones normally inside the prison.

Talk about the 4 advantages of wireless signal jammer

In the last few years, various types of cell phone jammer have emerged in an endless stream. We are dazzled and dizzy. In fact, not all products are suitable for us to apply to ourselves. Some products are public, so they are not suitable. There is a very special jammer used in other fields by us, and it also appears in front of us. Its name is wireless signal jammer. So what are the advantages of this type of product?

When we use a wireless signal jammer, you will find that no matter where we are, as long as we can turn on such a jammer, no one can search for our wireless signal. In other words, home The effect of the product is more obvious than that of common public products. In such an environment, we can always shield all signals easily, but if we use a public shield, then the shielding effect may be unstable The problem, so we need to understand the specific use effect.

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What are the advantages of wireless signal jammers? The following editor from Chengdu Saiyue will explain the 4 advantages of Saiyue wireless signal jammer one by one.

1. Wide application
Wireless signal jammer is mainly used in examination rooms, but not limited to examination rooms. They can also be used in prisons, gas stations, mobile phone bomb prevention, oil depots, liquefied gas stations, detention centers, interrogation rooms, courts, labor reform teams, conference rooms, theaters, churches, Only used in libraries, school dormitories, special security and confidential occasions (confidential offices, negotiation rooms, mobile vehicles, mobile political and business dignitaries guarding the scene).

2. Strong pertinence
Wireless signal jammers can be mainly used for domestic college entrance examinations, domestic college entrance examinations, adult college entrance examinations, self-study examinations and various colleges and universities examinations, as well as various middle schools, technical secondary schools, vocational high schools, prisons, detention centers, conference rooms, etc. Use mobile phones to cheat, send text messages, Adverse effects caused by communication with outside prisoners, collusion with others, etc.

Three, the shielded signals are diverse
Effectively shield GSM/CDMA/DCS/PHS/TD-SCDMA/WCDMA/WIFI/TD-LTE/FDD-LTE.

Fourth, model advantages
1. Using high-dispersion aluminum alloy shell, low working temperature, more stable shielding effect.
2. Built-in silent turbo fan, low working noise.
3. Separate power adapter. 12V/24V DC power supply work, convenient for vehicle mobile work.
4. The antenna is externally designed, and one end of the interface is unified to make the appearance more beautiful and decent. It also has an anti-loosening design, and the antenna and the host have a marked working frequency band to facilitate one-to-one correspondence.

A major feature of the wireless signal jammer is that it is easy to carry, because it is relatively small, so when we go out, we can also carry it around, but there are other types of products around us. There are major drawbacks. Because the public products are relatively large in size and heavy in quality, they may consume a lot of manpower, material and financial resources during the carrying process, and sometimes even extremely difficult problems occur. In comparison, the reputation of household products will naturally be more ideal and more convenient.

How smart home products steal your secrets

There is no doubt that the US’s information technology strength is in an absolute leading position in the world. This strength is not only reflected in the number of information technology talents, but also in the ability to research and develop information technology, control of information resources, and influence on the formulation of information technology standards. For example, the world’s largest professional network warfare unit is in the United States; the mainstream operating systems (such as Windows, MacOS, Andriod, etc.) installed and used in the world’s computers and smart terminals are all developed and designed by the United States; the world’s main 13 root domain name servers Ten of them are in the United States…It is no exaggeration to say that the United States has the power to monopolize the world in terms of information technology. Of course, this also includes the power to invade and monitor the world.

In addition to operating systems, smartphones, tablets, web cameras and other software and hardware that are often “visited” by hackers, household products such as routers, set-top boxes, smart cars, and even smart TVs, smart air conditioners, etc. cannot escape the fate of being invaded and monitored by the CIA . Take smart air conditioners as an example. In order to improve the user experience, some manufacturers have installed microphones inside the air conditioners to collect and feedback the noise generated during the operation of the air conditioners, and use this as a basis to improve the process to improve the user experience. The CIA can use its exclusive mining (not publicly disclosed or feedback to related manufacturers) or vulnerabilities that have been disclosed but not patched in time (such as zero-day vulnerabilities) to attack smart air conditioners and ultimately gain control. Once the intrusion is successful, the microphone used to collect the operating noise of the air conditioner becomes an eavesdropper that monitors the sound of the surrounding environment, making it impossible to guard against. For another example, by invading and controlling smart cars, the CIA can tailor “traffic accidents” for some key targets, which are silent and difficult to track down. The most frightening thing is that the malware developed by the CIA can bypass software that uses cryptographic technology to encrypt storage and communication, and directly obtain your communication information. It should be noted that the “bypass” here does not directly crack the data that has been encrypted by the application, but has been monitored and acquired at the beginning of the information collection and entry (not yet encrypted). Of course, if your smart terminal uses point-to-point encrypted communication at all times, the CIA will still be unable to receive the monitored information.

So you still need to know about mobile phone signal jammer, Jammer-mart.com will be your good choice.

Chinese company fined 34.9 million U.S. dollars for selling mobile phone jammers

Phoenix Technology News, May 27, Beijing time, according to foreign media reports, a man in Florida and a Chinese company CTS Technology were formally fined US$48,000 and US$34.9 million by the Federal Communications Commission (FCC), respectively, because of the man. Use signal jammers to prevent drivers from using mobile phones, and CTS Technology sells these devices.

Signal jammer may hinder the work of the emergency response team, thereby hindering public safety, so the use or possession of these devices is illegal.

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It is reported that for two years, the man named Jason Humphreys (Jason Humphreys) has been interfering with cell phone signals on Interstate 4 between Seffner and Tampa until 2014 Was caught.

At the time, MetroPCS reported that its signal towers would always be disturbed at certain times of the day, but in fact this is exactly the time Humphries drives to and from get off work every day.

The document shows that the FCC had planned to fine Humphries US$48,000 two years ago, and this week the FCC finally officially confirmed the penalty.

Humphries told the police that he had been using signal jammers in his Toyota vehicles to prevent other drivers from making calls while driving.

The FCC determined that this was an “unauthorized behavior, which used illegal equipment to cause deliberate interference.”

The fine for the Chinese company CTS Technology was much higher, reaching US$34.9 million. The FCC said that for more than two years, CTS Technology has been selling 285 signal jamming devices to American consumers through the company’s official website or third-party platforms, and falsely claimed that some devices have been approved by the FCC.

The FCC said the company sold 10 high power jammer to the committee’s secret investigators. They can interfere with signals such as mobile phones, Bluetooth, radio waves, and GPS, and some interference strength can even reach half a mile.

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FCC official Travis LeBlanc said: “In today’s mobile world, cellular networks, GPS and other signal jamming devices will seriously endanger communications, commercial operations and public safety. The promotion or sale of these devices to the public is illegal and will be severely punished.

Common questions and answers about signal interference

Can someone send me a text message when the phone is blocked?

After the mobile phone is blocked, the text messages sent by others will not be received, nor will it be possible to make and receive calls. After unblocking, that is, the cell phone jammer is turned off or you leave the area where the phone signal jammer works. If it is a text message sent to you by someone else on the same day, you will receive it. If it is earlier, such as yesterday or earlier, this It depends on whether the SMS service of your mobile communication service provider has this function.

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Similarly, if you are blocked by your mobile phone, after someone dials your call, if your mobile phone is activated with Caller or similar services, after the signal is restored, you will receive a short message reminder of missed calls.

Can smartphones be immune to the influence of mobile phone jammers?

There is no way. The unshielded cell phone has nothing to do with whether the cell phone is smart or not.
The frequency of GSM mobile phone is 900MHz/1800MHz, CDMA is 800MHz, PHS is 1900MHz, mobile phone signal jammer usually shields the frequency interference of these four frequency bands, if you have a way to keep the phone out of this frequency, you can I don’t like jammer interference, so there is no way, because if the mobile phone is not within this frequency range, it is not a mobile phone (including PHS).

Does the jammer consume a lot of mobile phone batteries?

Mobile phone jammers consume a lot of battery for most mobile phones. Since the mobile phone jammer is turned on, the signal between the mobile phone and the base station will be shielded. Actually, it is interfered and cannot form normal communication with the base station. Then, many mobile phones have this function: when there is no signal, the mobile phone must be very Efforts to search for the signal, which leads to a lot more power consumption than the normal standby state!

Multifunctional signal jammer, suitable for different interference purposes

GPS jammer not only provide communication protection. These GPS jammers can point out small problems in the network signal. The GPS jammer keeps the frequency free from any interference. Entrepreneurs and employees are also protected by any intrusive measures used by database crooks. Multifunctional shields set the tone, making all forms of information indispensable, whether it’s personal or business information.

In addition to GPS jammers, there are several other types of jammers, among which the best jammers are very useful for individuals and organizations.

The mini jammer is an excellent mobile phone jammer that can effectively block the signal while on the move. This portable jammer is not expensive. The portable jammer is very important. The jammer will not affect the work of any other electrical or electronic products around it. This feature of the portable jammer makes it easy to use without any restrictions. In addition, the portable shield is easy to carry and easy to carry. Therefore, it is an ideal choice for individuals. Portable jammers are available in different models and sizes.

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In addition, there is a 4G jammer, which can block all mobile phone signals from anywhere in the world. The 4G jammer is a very efficient and complex device. It is a powerful device that can block signals up to 20 meters long. The 4G jammer can be operated with batteries and adapters. Therefore, 4G jammers can be used indoors and outdoors. In other words, the advantage of this shield is that the installation location can be selected. 4G jammer is a more convenient shielding device.

The shielding distance of the device has a great relationship with the power of the device and the use environment, and several aspects that are helpful to the shielding effect: one is the output power of the device, the other is the working method of the shield, and the third is the use environment (indoor or outdoor). The fourth is to shield the interference intensity of the surrounding environment.

Mobile phone signal jammer

Nowadays, mobile phones are all digital signals, and the anti-interference ability of digital signals is very strong. Generally, the effect of using analog signal technology to interfere with digital signals is poor. Therefore, digital signals must be used to interfere with digital signals. The interference effect is quite different. The jammer using digital jamming signal technology has lower power and higher efficiency than the jammer using analog signal jamming technology.

The synthesis, attenuation, and reflection analysis of indoor mobile phone signals and interference signals is very complicated. Before shielding, the strength and quality of local cell phone signals have a great impact on shielding. Different mobile phones have different effects. Generally, mobile phones with strong ability to receive weak signals may not have good anti-interference effects.

The direction of the base station and the direction of the shielded area of ​​the mobile phone also affect the shielding effect. Generally, the spatial signal strength is about -60 to -70dbm, and the base station can reach about -40dbm within a few hundred meters, and the mobile phone reception strength range is generally between -35 to -95dbm. The higher the signal power of the space mobile phone, the shorter the shielding distance.

The above conclusions are based on the law of radio signal transmission in free space. In reality, there are many obstacles on the ground that affect the transmission of radio waves. The above can only be qualitatively used as a reference, especially indoors. The above law is very different from the actual situation. Therefore, this problem is difficult to calculate accurately at the time, and can only be determined based on the actual situation on site. Precise construction projects must carry out preliminary research and signal testing, and then design specific solutions. In the later period, timely follow-up tests are required, and certain corresponding supplements can be foolproof, that is, to achieve the effect of strict shielding.

Mobile phone signal jammer installation and technical advantages of conference room signal jammer

Many companies will install signal jammer in conference rooms. The main reason is that they don’t want to let the phone call in to disturb the progress of the meeting. What are the technical advantages of signal jammers in conference rooms? What are the installation methods of signal jammers? Below jammer-mart Let me introduce you.

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Advantages of existing technology of mobile phone signal jammer:

(1) The new cell phone jammer can already achieve the IMSI number obtained in the 4G mode, which does not disturb the people, does not interfere, and is green;

(2) Which floor in that area has a mobile phone violation alarm, that is, the shielding device in the area is activated, not all devices in the entire unit’s supervision area are activated together, not for a long period of time, so the shielding effect is very small, the time limit is very short, green Environmental protection;

(3) Leading technology, mature and reliable, in line with the technical prevention requirements of national signal control;

(4) It can effectively block the 2G+3G+4G mobile phone standards that all mobile\linkage operators have opened and run today. The IMSI number obtained in the 4G mode in the coverage area can be used for all telecom mobile phones. The system collects and is handed over to the telecom operator for whitelist control.

Installation method of mobile phone signal jammer

1. When using an external mobile phone signal jammer with an antenna, lock the letter on the antenna corresponding to the letter on the host, and then turn on the power.

2. The mobile phone signal jammer with built-in antenna is easier to use. Just plug in the power and turn on the switch.

How to crack the working principle of the mobile phone signal shielding device in the college entrance examination examination room?

There are generally two ways to block cell phone signals:

One way is the same as the principle of closed-circuit television. Put the mobile phone in a metal mesh bag, and in principle all electromagnetic waves will be shielded.

Another is that if you walk into an area, the mobile phone will have no signal. This is because there is an electromagnetic wave transmitter in the area. Its frequency is the same as that of the mobile phone. The signal it emits interferes with the signal of the mobile phone.

The cell phone jammer currently on the market work in accordance with the second method. In fact, the principle is very simple, but private use of this frequency band is illegal and cannot generate commercial value, but now schools are starting to use it to prevent cheating. Let’s take a look at its working principle.

When the mobile phone is working, it is within a certain frequency range. The mobile phone and the base station are connected by radio waves, and the data and sound transmission are completed with a certain baud rate and modulation method. In response to this communication principle, the mobile phone signal jammer scans from the low-end frequency of the forward channel to the high-end at a certain speed during operation. The scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as a search network, no signal, no service system and other phenomena.

How to crack?

First of all, I feel shameless about this title because it has no solution. I am actually telling everyone how to avoid it?

Method one (very silly and shameless): When entering the examination room, secretly turn on the shield while the teacher is not paying attention. At the beginning of the exam, the teacher will habitually turn on the shield, because the shield itself is turned on, so… it will be turned off!

Method two (luck): WIFI, WLAN unlimited local area network functions only available in smart phones, turn on wifi, wlan and other devices, search-connect-confirm-enter the password (default password 12345678). According to experience, all routers like to use the wifi password The setting is the same as the username, you know. (Because many jammer products in the market do not shield and interfere with the 2.4G frequency band of WIFI)

Method three (tips): When the mobile phone has no signal, click Settings-Network-Network Selection-Manual-Searching Network-Select Network (China Mobile/China Unicom/China Telecom) Speed ​​select the type of card you use, speed exit, so Short-time signals can be obtained. This method consumes more power because it needs to search the Internet.

Criminals complete the theft in 20 seconds

Recently, the border defense detachment of Dongguan City, Guangdong reported that a series of car property theft cases that occurred in service areas such as Guangzhou-Shenzhen Expressway Houjie this year have been solved. Criminal gangs used signal jammer to transmit signal interference, causing car owners to lock the car and steal the car. Inside property.

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From the surveillance video, we can see that in the Dalingshan service area of ​​the Guangzhou-Shenzhen Expressway, a man wearing a white short-sleeved T-shirt got off a black car. He seemed to be moving his muscles and bones. In fact, he was just pretending to rest and looking for the target of the crime. . Soon, a gray SUV drove into the service area and stopped. A man and a woman in the car closed the door and left.

At this time, the criminal suspect appeared again, and saw him approaching the SUV car casually, opened the door easily, quickly got something from the car, turned around and got into the corresponding vehicle and quickly escaped. The entire theft process took less than 20 seconds.

In the end, the Hunan suspect Tan and his associates were arrested by the police in a hotel in Dongguan at the end of September. In the face of hard evidence, Tan and his associates confessed to the crime.

How to deal with “car jammers”?

①When traveling or shopping for parking, try to choose a public parking lot with camera monitoring. Especially when parking overnight, try to park in a parking lot that is supervised by someone.

②When locking the car, pay attention to the phenomenon of locking the car. For example, when some cars are locked, the two rearview mirrors will be retracted; when some cars are locked, the turn signal will flash twice, etc. When an abnormal lock is found in the use of an electronic lock, a manual lock should be used to increase the safety factor and try to avoid unnecessary losses.

③When you lock the car, pay attention to whether there are suspicious people around. Before you leave the car, pull the car door with your hands to make sure it is locked.

④Don’t put valuables such as leather bags, mobile phones, cash, etc. in the car, so as not to let criminals catch them.