Signal Jammer Tech

Proliferation of wireless signal jammers

The reliance of our society on wireless technology is growing rapidly, shaping the way we live our lives. From making phone calls on the go to using GPS for directions, wireless devices have become indispensable. Nonetheless, this dependence also exposes us to the risk of best signal jammer.

How does a signal jammer work?

In general, jammers simply disrupt existing wireless signals by flooding them with noise. By adjusting the jammer to a specific target frequency range and emitting a high-power noise, tone, or pulse, the jammer can interfere with nearby receivers trying to listen for that frequency. Traditionally, this has meant interfering with radio communications, but the same core principles apply to other types of wireless signals - cellular, WiFi, Bluetooth, GPS, and so on. Jammer ranges vary depending on the power and size of the device; In urban environments, small handheld jammers may be effective at a range of 100 meters or less, while large military-grade jammers can be installed in locations that easily cover hundreds of miles of open terrain.

Military and paramilitary uses of signal jammers

The widespread use of jammers occurred during World War II, as the Nazis disrupted Allied radio transmissions in occupied Europe. Subsequently, their popularity continued to rise during the Cold War. The Soviet Union and China employed jamming techniques to interfere with incoming signals, Cuba blocked American radio stations, and both North and South Korea engaged in jamming each other's transmissions.

The use of signal jammers remains prevalent in electronic warfare (EW), particularly within the Russian military. In 2018, Russia reportedly utilized this technology to interfere with U.S. low-altitude surveillance drones during the Syrian conflict, prompting questions about whether the drones crashed or were merely redirected.

Among Mexican drug cartels, jammers have risen in prominence as a favored tool, often paired with drones as part of their technological arsenal.

Small commercial drones have been deployed to monitor territories, particularly during nighttime using thermal cameras. These drones have also been weaponized to drop explosives on targets, a tactic previously employed by terrorist groups like the Islamic State in the Middle East. As a result, cartel members carry portable signal jammers to interfere with nearby drone connections, as well as cellular and radio communications.

The notion that signal jammers should not be a worry for someone like me, who is not a high-value military target or associated with a warring drug cartel, is mistaken. It is crucial to acknowledge that anti drone jammer are easily accessible online, inexpensive, and can be utilized by individuals who know where to find them. These devices can significantly affect various aspects of your daily routine. Facebook has even shared unexpected demonstrations to showcase the consequences of signal jammers.

Our intention is not to compel you to cease using WiFi, discard your phone, or dispose of your ham radio - wireless devices are convenient and highly beneficial during emergencies. Nevertheless, for the security of your family and property, it is advisable to consider their potential vulnerabilities and take measures to limit reliance on wireless devices.

  

Advantages of cell phone signal jammer

Cell phone jammers prevent and disable any mobile phone communication from entering specific areas of a building or open space to...

• Prevent industrial espionage using mobile devices as eavesdropping devices or for taking photos (cameras)


• Counter terrorist threats, such as remotely detonating bombs in high-risk areas


• Eliminate public nuisance in places such as cinemas, restaurants and churches

How cell phone blockers work

Cell phones are two-way radios that communicate via cell towers. cell phone jammer work by sending a strong signal on the same frequency used by mobile devices to effectively interfere with communication between the device and the cell tower. The result is that the mobile device does not work and "No network" is displayed.

Physical description of cellular jammer

It comes in different sizes and shapes. Some are pocket sized, some are bigger. Some masquerade as plain phones or briefcases.

Precautions before buying a mobile phone jammer:

• What is the effective interference range (10-50 meters above)

Which cellular systems can it block (cdma in North America, gsm, tdma, 4G, 3G amplifiers, pcs, dcs or all?)

• How many cellular systems can it block simultaneously (cdma, etc...) (Low-end models can only block one type at a time, while more complex models block multiple systems at once)

Indoor 3G cell phone signal blocker

As we all know, for a certain purpose, in order to achieve the ideal state, now mobile phone signal blockers are used to help people achieve the purpose, and in the various types of mobile phone signal blockers sold on the market to buy one that can meet your requirements is the best choice. For those who are looking for a signal blocker that can cut off 3G cell phone signals and also has adjustable features, they can take a look at this "4 antenna Adjustable Cell Phone Signal" remote control jammer that will be introduced here soon.

As we all know, in different situations people may need to cut off the signal of different frequency bands, if this is the case, gain one with adjustable function may be a good choice, because it allows you to choose the interference frequency band you want, and since this 3G mobile phone signal blocker design has adjustable buttons, so you can easily reach the target. In addition, since this is a high-power 3G phone jammer and is designed with 4 antennas, it can also easily cut off 2G 3G phone signals at the same time. This adjustable 3G mobile phone signal blocker features a high-power design that interferes up to 40 meters depending on the signal strength in a given area.

More importantly, the 3G mobile phone signal blocker is also designed with a good cooling fan system, so that the 3G mobile phone signal blocker always maintains a good working condition, without producing high temperature harmful to the 3G mobile phone signal blocker itself. Therefore, one aspect that people will also consider is the application field of this high-power 3G mobile phone signal blocker, if so, you do not have to worry about this high-power 3G mobile phone signal blocker, you can easily use it in churches, churches and other places, theaters, concert halls, classrooms, libraries, banks, museums and other places do not allow loud talk, But some people can't resist talking on their mobile phones, and other places where the use of mobile phones is not allowed, this 3G mobile phone signal blocker can also be used.

4G cell phone signal blocker

The full name of this handheld signal blocker is "6 antenna Handheld 3G 4G full frequency mobile Jammer", this is a 3G 4G full frequency mobile jammer, with 6 antennas, in addition to cutting off 3G, 4G(LTE) and 4G(Wimax), the jammer can also block normal 2G mobile signal at the same time. Such as CDMA, GSM, DCS and PCS mobile phone signals. And with a portable design, it is lightweight and can use a rechargeable battery as a power source, so this portable 3G 4G signal jammer is easy to remove when needed.

So while this is a handheld 3G 4G phone jammer, it's also designed with a high-quality cooling system so you can use it without worrying about the temperature. In addition, this handheld 4G signal blocker has also been designed with an on-board charger, so that it can easily be used in the car, so for people who need to use this handheld signal blocker in the car, just choose this one. . Therefore, this handheld 4G mobile phone blocker is also designed with selectable buttons so that you can decide the interference frequency band according to the actual situation you are in.

  

Teacher suspended for blocking students' cellphones

LAND O' LAKES, Fla. --The act of a science teacher in Florida using a signal jammers to prevent his students from using their cellphones during class has resulted in his suspension.

WTSP-TV, the CBS Tampa affiliate, highlighted Dean Liptak's efforts to engage students in their lessons by diverting their attention away from their phones.

Liptak's five-day, unpaid suspension was officially sanctioned by the school board members in Pasco County on Tuesday. Liptak did not raise any objections to the decision.

According to officials, Liptak utilized the phone jammer in his Fivay High School classroom, commencing on March 31 and concluding on April 2.

In his conversation with the school district investigator, he made it clear that he had no intention of causing any disruptions. He explained that he believed the jammers were permissible as long as they were not intended for any malicious purposes.

According to WTSP, the district has acknowledged that Verizon made the choice not to pursue charges against him.

Superintendent Kurt Browning conveyed his concerns in a reprimand letter, pointing out that Liptak's actions of signal jamming had the potential to violate federal law and create interference for individuals attempting to contact 911 during emergencies.

"Verizon had come to the school saying someone had a jamming device, because the cell phone service was being interrupted in the area," WTSP quotew Pasco County School District spokesperson Linda Cobbe as saying.

It has been stated by Cobbe that Liptak's jamming device effectively hindered communication to the cell tower situated on the Fivay High campus.

It is high time that steering wheels were equipped with cellphone signal jammers.

In California and a minimum of twelve other states, it is considered unlawful to operate a vehicle while holding a cellphone. Despite the clear prohibition, many individuals still choose to disregard this law.

Without fail, we encounter thoughtless and self-entitled individuals on a daily basis, who pose a danger to themselves and others by engaging in conversations or texting while driving.

In motor vehicle accidents last year, a staggering 37,133 fatalities were recorded by the National Highway Traffic Safety Administration, with distracted drivers accounting for more than 3,000 of these deaths. Moreover, each year, a significant number of individuals sustain injuries due to drivers being distracted and not paying attention to the road.

In order to gauge the perspective of car manufacturers, I reached out to the Alliance of Automobile Manufacturers, an industry association. According to Bryan Goodman, a representative of the organization, automakers approach this issue with great seriousness.

“We can all agree that hands on the wheel and eyes on the road continue to be critical to safe driving,” he said, adding that cellphones “were never designed to be used while driving.”

The statistics speak for themselves: distracted driving fatalities exceed the number of lives lost in the Sept. 11 terrorist attacks, underscoring the urgent need to address this grave public-safety concern.

   

The rise of the Internet of Things has led to an increasing demand for location services. According to certain institutions, it is predicted that 60% of Internet of Things devices will rely on geographical location data. Outdoor positioning, in particular, is expected to be a significant market that should not be overlooked.

The GNSS (Global Navigation Satellite System) is a highly esteemed international club comprising of merely four members, which garners the interest of global leaders and the scrutiny of numerous esteemed scientists and engineers. These four members include the GPS of the United States, GALILEO Galileo of Europe, GLONASS of Russia, and Beidou COMPASS of China.

There are four prominent satellite navigation systems worldwide, including China's Beidou satellite navigation system, the United States Global Positioning System (GPS), the European Union's Galileo satellite system (GALILEO), and Russia's GLONASS satellite system (GLONASS). These four systems are acknowledged as suppliers by the United Nations Satellite Navigation Committee.

China Beidou is a recent addition, yet it stands out as the most dynamic member in terms of development. What exactly is Beidou and how does it influence our daily lives? This intriguing subject has garnered significant attention. Numerous scholarly publications delve into the intricacies of Beidou; however, these professional articles often employ jargon that may deter the interest of the general public.

Small GPS signal blockers great use

The GPS satellite positioning system is the most widely used satellite positioning system globally. It enables vehicle tracking, route navigation, information inquiry, traffic command, emergency assistance, and various other functionalities. While the GPS satellite positioning system has brought immense convenience to our lives, it has also given rise to certain challenges that pose a potential risk to personal safety.

For instance, when dealing with mortgage car companies, the original owner of the car temporarily relinquishes control of the vehicle in exchange for monetary assistance. To prevent any unauthorized retrieval of the car by the original owner, these companies opt to purchase GPS shields. These shields are then installed in the vehicle's parking lot and on the car, making it impossible for the original owner to track the vehicle. This measure effectively safeguards the property's security.

The market for GPS locators is witnessing significant growth, leading to a surge in demand for GPS signal blockers. These blockers are sought after by individuals who desire to evade GPS signal tracking. Nevertheless, it is essential to evaluate the actual effectiveness of GPS signal blockers in shielding signal tracking.

Most GPS locators can be effectively shielded by
gps blocker. The use of blockers disrupts the normal functioning of the GPS locator, preventing complete data transmission to the locator monitoring platform. Similar to mobile phones, GPS locators require the insertion of a mobile phone card or an Internet of Things card to retrieve data. Therefore, as long as the GPS signal blocker can obstruct the signal transmission of the mobile phone card, it can also block the GPS locator.

  

Why use cell phone jammers?

You know why a lot of people use cell phone blockers? In fact, there are many situations that may require a cell phone blocker.

When you hear about cell phone jammers with spy GPS trackers, it's clear that you have some negative impressions about using such devices.

After all, you want to know if cutting off communication with a cell phone user is malicious.

However, the use of cell phone signal blockers is important for a variety of reasons. This depends on a variety of parameters.

School

Schools and universities are particularly useful places to use phone jammer. This is because blocking mobile phone signals can prevent students from being distracted by mobile phones.

In addition, students cannot cheat by sending cheating text messages to each other during the exam.

When it comes to facilities and surveillance systems, check out our range of top surveillance cameras. We have all types and models of surveillance cameras, whether for personal homes, schools or even shopping malls.

You can also choose between a hidden spy camera or a standard surveillance camera. Therefore, please make your choice according to your needs, as our primary goal is your safety.

High security site

This is the case in certain specific places such as prisons and detention centres. The use of telephone jammers in these places can prevent illegal communications between prisoners and visitors.

Of course, it's also useful to use cell phone jammers in places like movie theaters or libraries.

In these venues, customers want to enjoy their activities in peace. These are the only places where using a phone jammer would be useful.

Is it legal to use phone jammers?

In fact, the signal jammers is not meant to cause harm. In fact, even if the mobile phone signal is blocked, the frequency of GSM alarm emergency services will not be interfered with.

So feel free to use this device to give yourself and your customers the peace and quiet they deserve. Interference also allows the people inside your building or site to enjoy peace and security.

What should I consider when choosing the right model?

Admit that sitting on the bus listening to someone talking loudly about a problem on the phone is pretty boring.

It's even worse if it happens in the middle of an important meeting, or even during a fancy dinner at a restaurant. These are the most common reasons people buy different phone jammers.

There's only one thing you need to be aware of! If you're not sure how to choose the right type of signal blocker, then you'd better read the following information.

Your budget

The first thing you need to do is determine your budget. It's important to set the number and start searching for the devices in it.

Once you find a wifi blocker that suits your needs, you should start looking at reviews about it. Since the Internet is a great place, you can be sure that there are many people who have the same equipment and can share their experiences with you.

On our website, you will be dazzled by the choice between different quality models and the number of antennas (from 1 to 12).

Broadcast frequency

Keep in mind that different devices (such as GSM wireless alarms) operate on different frequencies. This is why one of the most important things is to understand the broadcast frequencies of mobile operators.

Support frequency

Once you have found the broadcast frequency, you can go to the next step to see what frequencies your device supports. If the product you search for is supported, then you can buy it.

  

Cell Phones: Buying a Jammer - You Have to Consider This

Jammers interrupt mobile device wireless connections such as WiFi and GPS. You can read what it's for and what to consider when buying one here.

What can cell phone jammers be used for?

cell phone jammer, also known as cell phone blockers or jammers, are devices that disrupt radio connections such as cell phone networks, WLAN or GPS by emitting radio waves. The range is between 10 and 40 meters.

The military and government even have models that can jam radio signals for miles.

Retailers can use gps blocker to prevent you from comparing prices in-store. Thus, retailers can increase sales.

Jammers are also useful in certain rooms where silence or distraction is desired. This prevents the phone from ringing while watching a movie or while young people are chatting at school.

But criminals can also use gsm jammer to disrupt wireless alarm systems and other radio communications, and prevent emergency calls from being made over cellphone networks.

Are cell phone jammers allowed?

The use and trade of such mobile phone blockers is prohibited within the European Union. Use may be fined up to 1000 EUR. Penalties could be higher if emergency calls are blocked buy jammers. In some European countries, jammers are approved by the authorities. Such equipment is occasionally used in French cinemas and theaters. But in Germany, this is strictly regulated: whoever wants to use radio frequencies needs to be assigned according to the Telecommunications Act. Even the import of such equipment is prohibited and strictly controlled. The devices are then confiscated and hefty fines imposed.

Use of mobile phone jammers

School cell phone jammer

The questions on the exam are well known. Use of unauthorized assistive devices such as cell phones, smartphones, tablets, wearables, or similar devices during an exam will be considered attempted cheating.

For some time now, auditors have increasingly observed remediation through the use of so-called cell phone jammers.

Products now available range from pure "cell phone indicators" to active jammers to smart IMSI catchers that force replacement of new GSM cells and log personal data in wireless network areas.

The Ministry of Education of Baden-Württemberg has issued a statement in this regard, clearly regulating the use of such devices:

From the Ministry of Culture's point of view, the use of devices that completely block reception by mobile phones by emitting their own radio waves ("blockers") is legally unacceptable, regardless of data protection checks. Because in the GSM frequency range only mobile network operators have the right to use the frequencies they auction and therefore also have the right to operate cell phone blockers.

The operation of mobile phone interceptors by third parties is an unallocated frequency use, which is prohibited according to Art. 149 (1) Art. 10 TKG. The use of mobile phone interceptors does not require a frequency assignment only if "the authorities exercise their legal authority in accordance with the conditions of use of the frequencies laid down by the Federal Network Agency". There is not sufficient legal basis for use in a school setting.

It is also illegal to use equipment that listens to or records messages and is punishable by breach of telecommunications secrecy.

From the perspective of the Ministry of Education, the use of a device that scans a specific frequency range and only shows that there are switched on phones in the room without identifying the exact location is permitted under data protection law, as no personal data has been processed.

The question, however, is whether it is wise or useful to use such a device, and therefore necessary. Carrying a mobile phone is already considered cheating in public school exams in Baden-Württemberg due to the special regulations that apply. Since the effects of such devices are easily circumvented, for example by placing a mobile phone in airplane mode, scanners are of no use in exam situations. In this case, the device would not be detected by the frequency meter; but would still be carried illegally, thus constituting a fraudulent act.

  

Mobile signal jammer and Mobile Network Interceptor

The Invention of Mobile Phones

Mobile phones have become the most famous invention of the 20th century after penicillin, evolving into cameras, mini computers, etc., making them irreplaceable for every modern person. However, mobile devices have a drawback - they emit sounds and ringtones, so negotiations may not be successful - both parties cannot focus on the topic - they are always distracted.

The solution to this problem is to use mobile signal jammer. For a long time, they have been actively used by special forces, large theaters, concert halls, and multiple companies. Now, these signal scramblers are also sold globally. Our company provides customers with devices that can "protect" their phones: compact phone silencers and fixed jammers with a range of 8-15 meters. With the help of electronic device jammers, you can truly speak calmly without worrying, without being distracted by inappropriate calls, or worrying about being eavesdropped, because even if the phone owner is unaware, the phone can become an excellent listening device. From the perspective of tactical capabilities, mobile phones have acquired the attributes of covert information retrieval tools - namely "legitimate eavesdroppers". It is worth noting that mobile phones have the most unique tactical capabilities.

Warning!

Many European countries prohibit sales within the EU. Before continuing with the information request, please check the current regulations in your region. For law enforcement use only - as needed.

If you want to purchase a jammer, then you have come to the right place. On our portal, you can purchase various interceptor samples for mobile phones, Wi Fi, and GPS/GLONASS. We will supply goods to other countries around the world. Purchasing a signal silencer from the perfectjammer store is both simple and suitable.

Perfectjammer offers a wide range of product combinations, including various models of signal jammers and electronic devices with specific interference functions: preventing mobile phones, radio receivers, eavesdroppers, or other similar devices from receiving or sending signals in specific areas.

According to its performance and the signal specifications to be interfered with, different jammers can be used: eavesdroppers and mobile phone jammers, GPS device jammers, camera jammers, radio and wifi blocker, microphones and small recorder jammers. Going further down, you will find the types of interference devices and the main intervention areas to be checked.

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The working principle of a telephone jammer

There are various ways in which telephone jammers work. The simplest is the Faraday cage, which does not require special costs for production. A unique panel is installed on the wall to passively block signals. There is another device - a mobile phone jammer, which can detect the presence of available phones within a certain radius. Once a call attempt is detected, the phone signal will be blocked. Therefore, radio jammers can also interfere with incoming calls. In this case, the phone will enter standby mode.

You can purchase portable phones and effective fixed silencers from our online store. The frequency jammer operates using radio signals; If the detector records a signal

  

We have become very dependent on global positioning. A power outage will cost us billions of dollars. And there is no backup yet.

The dire threat of GPS could cripple corporate America

A growing problem for GPS: There is no backup system in the United States. Most of our critical infrastructure, including power grids, banks, transportation systems, and telecommunications networks, relies on GPS. In addition to traffic maps and other positioning services, GPS is used for high-precision timing required for high-speed financial transactions, wireless network synchronization, and grid synchronization. But the rising risk of severe blackouts has gone largely unnoticed. "I don't think GPS vulnerabilities have gotten a lot of attention because, unlike cybersecurity, there haven't been any major disasters," said Marc Weiss, a fellow at the National Institute of Standards and Technology.

GPS and other timing systems will become even more important to modern life in the future. With the rise of connected sensors, devices and machines (i.e. the Internet of Things), timing signals need to be more precise. A government report last year concluded that a lack of high-precision timekeeping systems could hinder the development of new technologies, such as instantaneous collision avoidance systems in cars or communication links in smart grids.

The United States is at greater risk than countries such as Russia, China, Iran, Saudi Arabia and the United Kingdom, all of which have some form of ground backup. GPS outages happen from time to time because the signal is weak and highly susceptible to interference. "Terrorists can just use a GPS jammers to carry out an attack," Goldward said. Each jammer costs less than $50 and is extremely difficult to track and stop. Note that companies such as Spirent UK provide equipment to assist in the detection of GPS interference to help combat such interference.

The Global Positioning System provides navigation for our ships at sea. It is at the heart of the new next-generation air traffic control system. It can even time-stamp the millions of financial transactions that take place around the world every day.

GPS faces threats from terrorists, rogue states and $50 cell phone jammer

• Criminals, terrorist groups and rogue states, even those with a basic GPS jammer you can buy for $50 on the Internet, face extreme challenges, said Todd Humphreys, a GPS expert at the University of Texas. big risk.


• "If you were a rogue state, or a terrorist network, and you wanted to cause some massive damage — maybe not an explosion, but an economic attack on the United States — that's what you might do." As a weakness," he told Fox News.


• Humphreys was the keynote speaker at the UK ICT Knowledge Transfer Network's World Experts Conference in London. His predictions about the prospects for this emerging threat are dire.

In 2010, for example, British researchers aimed a low-altitude GPS signal jammers at a test ship in the English Channel. The results were shocking: the ship went off course without the knowledge of the crew. Passing false information about their location to other ships increases the likelihood of a collision. The communications system stopped working, meaning the crew could not contact the Coast Guard. The emergency services system used to guide rescuers is completely out of order.

1. Then there's the disappearance of a U.S. drone over Iran. Humphreys believes Iranian authorities confuse the ultra-sophisticated RQ-170 spy drone into landing mode by using simple jamming techniques. The drone's Achilles' heel? It has a civilian GPS system, not a military-grade encrypted model. It doesn't take much to blind it and force it down.




2. Another threat that is burgeoning is so-called "spoofing." Unlike gsm jammer, which block or scramble GPS signals, "spoofers" mimic information from satellites. It can fool an aircraft, ship, or other GPS-guided device into thinking it's somewhere, but it's not.




3. Organized crime is already trying to exploit this possibility, Humphreys said. A criminal gang may hijack a container truck full of high-value cargo and trick the owner into thinking the truck is heading to a predetermined delivery point instead of the gang's warehouse.




4. Hanvers: "Civilian GPS signals are completely open and vulnerable to spoofing attacks because they have no authentication and no encryption. It is almost trivial to imitate these signals and trick a GPS receiver to track your signal." Authentic ."



5. Hijacking a container is one thing. Deceiving the global financial system is another matter. Another emerging GPS threat, Humphreys warned in a speech in London, is global stock and commodity trading networks.

Every transaction is time-stamped using a GPS clock. Computer programs monitor these timestamps with millisecond precision. If something goes wrong, many projects will be taken off the market. Hackers could easily interfere with these timestamps, triggering trading procedures, causing sudden liquidity crises and potentially mini-market crashes, Humphreys said.

Manipulating time, then, pays high dividends. An unscrupulous trader or criminal organization can make millions of dollars by delaying time even by a fraction of a second.

"You're able to match prices between networks in a different way than anyone else in the world," Humphreys said. “Everyone else in the world might be off by 20 milliseconds, and you happen to know the actual time. So you can buy low in one market and sell high in another.”

These devices are illegal in the US, but can be easily obtained on the Internet for as little as $50. People use them to avoid tolls, to hide from the prying eyes of their spouses, or to use company vehicles for unintended purposes. This sometimes has unintended consequences.

Devices that interfere with GPS may actually have a legitimate purpose: to protect individual privacy, he said.

"People have a right to privacy in their own lives," he said. “However, having a small dot-sized GPS tracking device to be able to secretly locate them at your friends — they would want to resort to some kind of jamming or deception to defend against this invasion of privacy.”

  

Service station thieves use car key jammer

Police have warned that thieves are using radio signal jammers to steal from cars parked at motorway service stations.

Thames Valley Police said the transmitters could be used to "interrupt" the signal for the remote key, thereby preventing the vehicle from being locked properly.

Police said 14 truck, van and car thefts had been reported recently, but there were "no obvious signs of burglary."

It advised motorists to check their vehicles before leaving them unattended.

Burglaries were reported in the Chieveley, Reading and Membury service areas on the M4 in Berkshire in the last two weeks of November.

How does a radio jammer work?

The remote key has a unique signal that is transmitted from the remote key to the car via radio waves. Portable jammer suppress the signal from the owner's key and interfere with this communication.

These devices can be used on a large scale, theoretically allowing thieves to cover an entire parking lot.

Potential thieves rely on drivers to press the lock button on the keychain but forget to double-check that the vehicle is secure, thereby leaving it open for easy access.

More modern vehicles that use keyless entry may also be vulnerable.

Car key Jammer: What you need to know

With tech-savvy thieves reportedly using electronic devices (" key jammers ") to prevent car locks, what do you need to know about this growing crime?

The transmitters, which are easy to buy online, can be used to interrupt the keychain's signal, meaning careless motorists will think their car is safe when in fact it is not.

This gives thieves an easy way to steal your belongings or even the car itself.

A relatively low-power gps blocker has a range of about 75m, which means that a considerable area (such as an entire parking lot) could be affected at the same time.

But wifi blocker wielding scammers can strike anywhere, not just public parking lots.

Deputy Chief Constable Matt Jukes, of the National Police Chiefs' Council, said although he believed the problem was minor at the moment, it was "a growing feature of vehicle crime".

"The Vehicle Crime Intelligence Unit is working closely and extensively with a number of partners, including the Home Office and car manufacturers, to develop solutions to prevent this crime now and in the future."

Loran Dover contacted the BBC to say the incident had happened to her on a residential street in Leeds.

"When I got up to get ready for work, I went outside and found all the car doors closed.

"When I knew I'd locked the car, I was mortified to think I'd just left it behind - I was staying at my boyfriend's house and had to leave Christmas presents in the car. But when we actually looked inside, the whole car was ransacked and everything of value had been taken.

"The police initially said they would not take any action. No one was even sent to check for fingerprints, because there were no obvious signs of a break-in. But when I called the bank to cancel my card, the thieves kept using it." Non-contact type. That's when the police really got involved and took the matter more seriously.

"They are currently watching CCTV and hopefully they will catch them."

  

By comparing these two devices side by side, M 27 and M25 are almost identical. From the installation bracket, CPU, wiring, and interference head, M-27 is no different from its brother. Blinder is ready to use out of the box, including all necessary wiring, external speakers, CPU, and two GPS shielding heads.

Overall, the M27 is a high-quality and high-performance wifi blocker

M27 is suitable for small vehicles with a smaller appearance. M47 is used to cover weak points of small vehicles or protect large trucks or SUVs.

Installation is almost effortless. By becoming slightly familiar with automotive electronic devices, amateur installers can easily connect the device. All you need is a power supply and a ground wire. It is easy to wire the signal jammers head through a firewall through telephone type connectors, which are small enough to pass through the smallest hole. Then the rest is to install the GPS interceptor head. This is where it's a bit difficult.

The installation brackets are independent of each other, which means that each side of the jammer head is supported by separate brackets. For normal operation, the jammer head needs to be completely straight and level with the road surface. This means that in order to install the pan tilt correctly, you must find 2 independent and completely horizontal surfaces on the car. If installed on the top of the bumper, this may be easy, but most people do not want to clumsily place two large cell phone jammer heads at the front of the vehicle. It is difficult to complete the correct head installation on many vehicles, which is why most Lens hood users create their own mounting brackets.

Once the head is installed correctly, M27 has made significant improvements compared to the old version. With a more powerful head and fully upgradeable CPU, this new device is ready for all new laser Radar speed gun developed. In most cases, this device will interfere with the LiDAR all the way to the muzzle. However, Blinder did encounter some interference issues.

For certain guns, such as the Ultralyte LR-B, occasional malfunctions may occur. Independent testing has shown that vehicles equipped with two gps jammer heads at the front of the vehicle cannot cover high reflective areas such as headlights. This is a particularly undesirable situation, as police officers are often trained to aim their headlights when they are unable to produce instant and fast readings. To solve this problem, a headlight laser protective cover may be needed. Laser veil is a liquid coating applied to headlights. Applying this technology to the headlights will greatly help Blinder achieve better interference effects.

Another solution is Blinder M47. This is the M27 with two additional interference heads. If users encounter interference when using the M27, two additional heads are very suitable for achieving better results. Two additional jamming heads will enable the vehicle to be bulletproof against most laser Radar speed gun in almost all cases.