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Jammers are very complex electronic devices

The Government of the National Capital Territory has announced its intention to assess the feasibility of employing technology that could disrupt mobile phone signals at the Alexander McConnocke Centre in Canberra. The quantity of mobile phones classified as contraband in the country is steadily increasing. A new GPS jammer was recently installed at the Supermax 2 high-security unit in Goulburn, which detains extremists and terrorists. If the initial testing is successful, the individual will face a two-year trial in a New South Wales correctional facility.

The latest systems incorporate a variety of antennas that disrupt the frequencies used by mobile phone signals, thus making the devices unusable. According to a spokesperson from the Community Justice and Safety Agency, the results of the trial conducted in Goulburn may influence the future application of this technology in the ACT. “The implementation of cellular jamming at the Alexander McConnocke Centre was a complicated endeavor,” he noted. “It is important to highlight that this technology has been previously trialed in Australia, and so far, it has not been successful. Furthermore, the resulting solution is notably costly.”

The Alexander McConnocke Centre provides a variety of mobile phones. In a 2017 article, The Canberra Times disclosed that prisoners had been apprehended with thumb-sized mobile phones. These portable bluetooth jammer are small enough to be hidden in body cavities, and their minimal metal content renders them less detectable by metal detectors. A spokesperson for the ACT Justice and Security Authority noted that the human rights laws in the ACT would not prevent Canberra Prison from implementing mobile phone jamming technology, as mobile phones are considered prohibited items. “Currently, detainees are in contact with their friends and family through phone and email facilitated by the [Alexander McCannock Centre],” he explained.

ACT Law Enforcement Inspector Neil McAllister emphasized that the territorial governments should hold off on any initiatives until Galben has dealt with the saboteurs. A crucial factor to assess when considering the introduction of jamming technology in Canberra is its effect on individuals surrounding the prison, including those driving along the Monaro Freeway who might need to reach emergency services.

Using jamming devices in prisons

OKLAHOMA CITY – A large quantity of unauthorized mobile phones has found its way into the possession of inmates, facilitated by criminal activities. On Monday, prison officials expressed their inability to utilize one of the most effective solutions for this problem: phone jamming technology. Officials from Oklahoma and South Carolina testified before an Oklahoma Senate committee, affirming the technology’s effectiveness. Nevertheless, federal law restricts government agencies from employing this technology, and the cellphone industry has been opposed to its use.

In the past year, Oklahoma confiscated more than 5,200 smuggled cell phones from prisoners. Mike Carpenter, who serves as the security director for the Oklahoma Department of Corrections, stated that although this figure is down by roughly 7,500 from the previous year, the problem persists at a serious level. Carpenter explained that a recent altercation between rival gangs at an Oklahoma prison escalated rapidly last month, following incidents involving contraband cell phones at multiple other facilities. This escalation resulted in one inmate being killed and over a dozen sustaining injuries.

When questioned about the efficacy of cell phone traffic jamming, Mr. Carpenter confidently replied, “Absolutely.” Gerard Keegan, representing the Cellular Telecommunications and Internet Association, pointed out that the cellphone industry predominantly relies on blocking signals from legitimate users. He opposed the implementation of portable cell phone jammers in prisons. Keegan advocated for a “managed access” system that leverages technology to detect signals from contraband phones in correctional settings, asserting that disabling those specific calls is achievable. He also expressed support for further research into cellphone jamming technology.

A federal law that would authorize states to implement jamming devices is currently pending in both the House and Senate. Earlier this year, Senator James Lankford of Oklahoma expressed a straightforward proposal to the U.S. Senate: “To defend our guards, safeguard our families, and curb criminal activities in prisons, we can block cell phone signals in federal correctional facilities.” Federal prison officials have tested micro jammers and report that if these devices function properly at a distance of around 20 feet, they can effectively disable phone signals within prison cells.

The second way to protect your car is to use modern multi-frequency car alarms that always use different frequencies. This makes it very difficult for thieves to intercept these signals. Other types of modern alarms generate different codes every time you lock and unlock your vehicle. Even if a thief gets the code and cracks it, they will not find anything. Today, such protected car signal jammers for sale are very popular and expensive, but they can protect you.

The accuracy of the IndoorAtlas technology used in modern buildings is 0.1-2 meters. Moreover, the technology does not require any additional hardware on the smartphone and can work alone or precisely cooperate with other indoor installation systems to achieve higher positioning accuracy. However, before using indoor location data on smartphones, developers must collect magnetic field data and overlay it on each floor plan. To do this, developers must create a floor plan image of the location and navigate the entire site while collecting magnetic field data. However, IndoorAtlas makes these steps easier by providing users with a practical online toolkit. In the north of the world, there are other companies such as Walkbase and Qubulus that have developed their own location positioning solutions based on precise positioning using wireless Wi-Fi networks. Both companies offer interesting location solutions, but IndoorAtlas stands out because it approaches the problem from a new angle.

Microsoft, Sprint Nextel, Facebook, and Google are among the companies asking lawmakers to amend the famous Electronic Communications Privacy Act to comprehensively protect online content, mobile data, and location information. “As wireless access to our information becomes easier, there is no reason for the government to go to such lengths to obtain wiretap warrants, and we are also looking for ways to: not use audio of recent communications, such as emails and text messages,” CCIA attorney Ross Schulman said in a blog post. AT&T wrote that law enforcement surveillance requests affected 0.25% of wireless users last year, assuming that every request was made against another user. That’s an increase of 0.18% from 2007. Unlike Verizon’s data, theirs includes data provided to 911 callers. AT&T also said that hundreds of full-time employees are responsible for reviewing and responding to all law enforcement surveillance requests.

There are multiple iRobots with multiple different gps blocker for car. They may be touched or bumped by someone or something, thus having a different perception of the two things. Based on the sensors, the robot reacts. The robot can also react to sounds and differentiate based on the volume. There is also an iRobot Roomba that can identify obstacles to avoid (such as walls and stairs). iRobot also makes a small robot that looks similar to the Recon Scout XT and behaves similarly to ReconRobotics. Soldiers can put it in their pockets, throw it into a building, and use it for remote surveillance. Or, the robot can extend its “neck” so that the camera is 8 feet above it to monitor high walls or fences. Or there is another robot small enough to move under the door like a worm with a miniature camera.

Jammers evolve into military weapons

Jammers are one of the best tools for blocking signals. With the development of science and technology, jammers have evolved into military weapons and are widely used on the battlefield. Washington – Russian troops have blocked several US military drones over Syria, four US officials said, which seriously affected US military operations. Officials say Russia began jamming some small U.S. drones a few weeks ago after a series of suspected chemical weapons attacks in the rebel-held Eastern Ghouta region. Officials say the Russian military feared U.S. forces would respond to the attack and began jamming the GPS systems of drones operating in the area. “Russia wants to turn around and destroy our interests,” Senator Ben Sasse said in a rush in response to Tuesday’s Russian news. Todd, director of the Radio Navigation Laboratory at the University of Texas at Austin, said Dr. Humphreys said jamming is very easy and it involves blocking or interfering with the drone’s reception of GPS satellite signals.

I am glad to say that I should be free to continue my appeal, President Jacob Zuma said in response to this week’s parliamentary debate on the State of the Nation Address. Sitting here, in a dark corner of Redwood Ridge, holding tight like the president, we often insult those who try to disturb us with false nonsense. But beyond that, Zuma urged the government to respect Section 16 of the constitution. This is part of the guarantee of our freedom of association, speech and media. This shameful and unfair attempt to block our phones was made after a promise was made in front of SONA.

“The security team resolved and clarified the GPS jammer with House Signal Distribution last Thursday,” Mr. Zuma said to applause.

A company called CellAntenna continues to try to exploit the problem of cell phone smuggling in prisons to expand its product line. Unfortunately, many people (especially prison wardens) want us to believe that new technological tools can solve our problems, so they continue to gain momentum. A group of prison wardens not only filed a rulemaking petition with the FCC, but also supported a bill asking the FCC to allow cell phone jamming in prisons. For general information about CellAntenna, you can read about how to profit from prison security loopholes and why this is not a good idea at Cellantenna. In addition, we have sent this letter (press release here) to President Rockefeller and senior settlement members in preparation for tomorrow’s Senate hearing on this issue. We have also scheduled an extra five minutes of Harold Feld’s time to briefly explain why this is a bad idea.

I recently read an article about location-based apps such as “Girls around Me”. This app can share your location without notification. How can I prevent it?

With the development of technology, some large companies now install cell phone signal jammers in the work area. This cell phone signal jammer completely separates interference, WiFi and phone functions, improving employees’ work. Especially in large conference rooms, 3G/4G cell phone blocker can be used to prevent meetings from being interrupted and meeting information from being stolen, which not only improves efficiency but also improves the protection of some information. Don’t let competitors or criminals benefit.

In fact, the “Girls around Me” app uses Foursquare check-ins and Facebook data to make it easier for boys to track girls around, but the purpose of tracking is unclear. There is a slogan on the app’s website that suggests how to use the “Girls around Me” app, which is all about finding your lover or finding your one-night stand.

Although Foursquare has withdrawn API access and the “Girls around Me” app has also ended its existence, there are many other apps that may be creepy. An app called Color will hand over your social media photos to strangers, even if you don’t want to share them. Another app, Find My Phone, could be used in a very abusive way by any of your ex-partners.

Or, you could use the app to find the nearest restaurant that has a dinner date listed. The app uses your smartphone’s GPS tracking module to perform such services, but it also shares your location data with third-party companies to keep you informed of your smartphone, which can be very annoying. You can also place ads based on ads.

Scrambling devices are very simple devices that use basic technology provided by the phone itself.

Will a jammer attract lightning when it is turned on?

Will using a signal jammer outside a building, in an open space, during bad weather attract lightning?

It would be great to be able to call anyone at any time. Unfortunately, restaurants, movie theaters, concerts, and churches are all affected by the surge in cell phones. Because not all cell phone users know when to stop calling. 3G2G signal jammer phones are portable and can be put in a pocket or bag to go out, making them a useful tool to stop people from calling in the above locations.

As for those lightning bolts, there is a small chance that they will hit the GPS jammer. The chance is about the same as the chance of lightning striking a cell phone in the same area, so if there are no lightning rods around, it’s probably best to avoid using a handheld jammer in your pocket for safety reasons.

Corrections has quietly removed all cellphone jammers from prisons.

The technology, introduced in 2008-09 to prevent inmates using smuggled mobile phones, has cost more than $17 million.

But signal blocker have not been in use since June after being found to interfere with new prison guard safety systems.

When announcing their introduction, then Corrections Minister Phil Goff said cellphone blocking in New Zealand prisons was a major step forward that will stop prisoners committing further offences while behind bars.

Stuff recently obtained details under the Official Information Act about the number of cellphones seized from the 18 prisons run by Corrections over the past three years.

There were 626 cellphones and more than 750 cellphone-related items (such as batteries, chargers, SIM cards etc) found by Corrections staff between January 2023 and November this year.

When asked why inmates would be smuggling cellphones when the prison’s had the mobile signal jammer that should render them useless, Corrections chief custodial officer Neil Beales said the cellphone jammers were removed in June.

The jammers had been found to interfere with new safety systems such as Corrections officer safety alarms, he said.

Advances in cellular technology had also resulted in jammers becoming “increasingly obsolete”.

It was “only one of a number of tools used to stop cellphones being used in prisons” and a number of “more effective tools” remain in place, Beales said.

These include Cellsense devices, which detect a range of metals found in cellphones, alongside screening and x-ray capability as well as detection dogs.

“Some people in prison go to extreme and elaborate lengths to introduce contraband into prisons, and we are constantly working to stay one step ahead of new methods used to introduce contraband into our prisons,” Beale said.

Corrections was looking at new and emerging technology to complement systems already in place, he said, and had started introducing the use of full body imaging technology at a number of sites to detect contraband that has been concealed on or in a person’s body.

In 2018 Corrections admitted cellphone jamming technology created a communications blind spot near Rimutaka Prison, meaning residents of a child sex offender unit outside the wire could not be tracked on-site at the facility.

Cellphones could be used by inmates to put pressure on others outside the wire, or to co-ordinate drug deals, and other offending. In May this year nine prison staff at Rimutaka were suspended for alleged misconduct, including the smuggling of cellphones into the prison.

Drug and alcohol counsellor and criminologist Roger Brooking, who has been critical of the spending on jammers from the outset, said it was not surprising that Corrections had ditched the technology.

“They don’t work. They never have worked,” he said.

“What prisoners have told me is that they have always managed to find areas within the prisons where the jammer just doesn’t seem to operate. So prisoners have been able to continue making cellphone calls to conduct drug deals, talk to family or whatever.”

The Marine Corps is on the hunt for electronic warfare attachments, “buckshot-like” ammunition, and advanced optics for its standard-issue rifle to help dismounted troops track and defeat incoming drones, according to a recent announcement from the service.

The notice seeking sources, published July 15 by Marine Corps Systems Command, details plans to field several new attachments to troops at the squad and platoon level to mount on their M27 Infantry Automatic Rifles in order to “support ‘every’ Marine’s ability to conduct self-defense against threat Groups 1 and 2 small UAS [unmanned aerial systems],” drones that weigh 20 pounds or less and between 21 and 55 pounds, respectively.

Those attachments include a “directional RF [radio frequency] and/or Global Positioning System gps jammer” designed to interfere with the signals drones use to communicate

Rather than have dismounted troops to rely on bulky and unwieldy stand-alone hand-held, counter-drone jammer, the emphasis on mounting these new attachments on an “organic” (read: essential) rifle reflects a need for systems that have “little to no impact on [Marines'] primary mission,” as the notice puts it.

For the advanced rifle optics, the most likely candidate for Marines is the SMASH 2000L fire control system from Israeli defense contractor SmartShooter, which allows troops to “lock on” to an incoming drone target for a “guaranteed hit.” The Marine Corps has been testing the system since 2021 but has yet to field it across the broader close-combat force.

The Marine Corps Warfighting Lab “has provided a limited quantity of the [SmartShooter] SMASH 2000L optics to a small number of Marine Corps units for experimentation,” a battle lab spokesperson told Military.com. “The optic has not been provided by the program office for use in Marine Corps training, nor has it been provided to deployed units.”

For the average grunt, it’s unclear how much weight these new devices will add to their rifle and, in turn, how that might affect its use on the battlefield.

The M27 weighs 9.8 pounds loaded with a 30-round STANAG magazine and outfitted with a sling. The addition of the Corps’ new Squad Common Optic (2 pounds), a rail-mounted AN/PEQ-16 laser illuminator (9.9 ounces), and a standard Knights Armament suppressor (1.4 pounds) results in a 13.8-pound weapon — just under the weight of the noticeably heavy XM7 Next Generation Squad Weapon rifle the Army recently started fielding.

Beyond these rifle add-ons, the Corps is also searching for “enhanced ammunition for existing firearms,” namely “buckshot-like” rounds for the service’s arsenal of rifles chambered in 5.56x45mm and 7.62x51mm, such as the M110 Semi-Automatic Sniper System, as well as for its M2 .50-caliber machine guns and 40mm grenade launchers.

Details about the new ammunition were not immediately available, but as recently as April Marines have engaged in counter-drone training with shotguns, alongside other “direct fire” weapons such as rifles and machine guns.

A Marine Corps Systems Command spokesperson did not immediately respond to a request for comment Tuesday.

Conventional militaries and non-state actors have increasingly menaced U.S. and allied forces with low-cost, weaponized drones in recent years, a development that had previously prompted Marine Gen. Kenneth McKenzie Jr., the former head of U.S. Central Command, to dub them the most dangerous threat to American forces in the Middle East since the advent of the improvised explosive device at the dawn of the Global War on Terror.

While the Marine Corps is working overtime to field several vehicle-mounted counter-drone solutions such as the vehicle-mounted Light Marine Air Defense Integrated System, or L-MADIS, the new push to equip grunts with easy-to-carry systems is part of the service’s broader effort to make every Marine a drone defender at a time when some units are currently deploying to geopolitical hot spots such as the Indo-Pacific without such capabiilties.

“Every unit down to the individual Marine, regardless of geographic location on the battlefield, is vulnerable to reconnaissance and, more dangerously, attack from threat Groups 1 and 2 small UAS,” according to the notice. “To facilitate freedom of movement, Marines require the ability to conduct self-defense against the threat.”

NBC10 Investigators tracked down a cell phone sniffer who specifically targeted people using their cell phones on SEPTA bus routes. Not only did he admit to doing it, he thought it was a good thing.

The man, who calls himself Jonathan, told NBC10 Investigators, “I guess I’m taking the law personally, and frankly, I’m proud of it.”

Jonathan said he doesn’t want to hear people talking on their phones in public.

“It’s still pretty annoying, and frankly, it’s pretty rude,” Jonathan said. Jonathan

said he was activating a cell phone jammer he bought online to block out conversations he doesn’t want to hear.

“A lot of people are very loud and have no sense of privacy at all. When they feel like they’re bothering me, I just screw in the antenna and turn the switch on,” Jonathan said.

An NBC10 employee, whom NBC10 Investigators calls “Brooklyn,” said she was horrified when she saw the man jamming passengers’ cell phones while she was riding a SEPTA bus to work.

“He was clearly holding this device that looked like a walkie-talkie, with four thick antennas on it. I started watching him, and whenever someone started calling, he would press a button on the side of the device,” Brooklyn said.

Brooklyn tipped off NBC10 Investigators, who went undercover and caught the phone thief with hidden cameras.

Minutes after boarding the No. 44 bus, NBC10 Investigators spotted Eric jamming a cell phone. Weeks later, they caught Eric as he got off the bus and told him cell phone jamming devices were illegal.

“From what I understand, it’s more of a gray area. From what I understand, it’s illegal to stop TV signals, radio signals. From what I understand, it’s not illegal to jam cell phone signals under the FCC,” Jonathan said.

But under federal law, it’s illegal to use, possess, buy or sell a cell phone jammer. The federal government says violating the law could result in jail time and a fine of up to $16,000. Cell phone jammers are illegal for public safety reasons.

Dr. Rob D’Ovidio of Drexel University studies cell phone forensics and e-crime. D’Ovidio said some cell phone jammers can block GPS, two-way radios and even police radios if they are close enough.

“With a cell phone jammer, you can limit all types of communication tools that use radio frequencies. That has the potential to be a public safety disaster. It’s a dangerous thing to cut off not only our government officials from communicating with the dispatch center, but also the public from communicating with 911,” Dr. D’Ovidio said.

NBC10 Investigators asked Jonathan if he was worried about disturbing someone who was seeking emergency help.

“Certainly, if that happened on a bus, I think I would have been in that situation. Of course, I think that would have been a very different situation; I think I would have called 911 myself,” Jonathan said.

SEPTA officials said they have received many complaints from 44 bus route passengers about lost phones. But SEPTA insisted that passengers are safe, adding that they have tested their system and handheld signal jammer alone are not enough.

SEPTA said all buses are equipped with panic buttons. Drivers can also alert police via digital destination signs on the front of buses. The transit authority said it has tested two-way radio communications and insisted cellphone jammers wouldn’t affect it. But that didn’t make Brooklyn feel any better.

Karyn Wall has lived in Lemon Grove for the past 20 years, and to her knowledge, her home has never been targeted by criminals. However, she recently learned how vulnerable her home is to would-be burglars.

“My husband and I feel very secure, but I know we may need to do something about the house, the interior, the lighting, etc.,” Wall said.

Shanah Clevenger is a crime prevention specialist with the San Diego County Sheriff’s Department who runs the free Lemon Grove Home Security Consultation Program. She’ll consider anything that can be done to bolster home security, no matter the budget.

“Some of my suggestions are quick and easy and don’t cost a lot,” Clevenger said. “I just suggest: do what you can, or do it incrementally until you feel your home is secure.”

That security measure includes protection against a relatively unknown type of wifi jammer. NBC 7 Responds spoke to cybersecurity expert Jim Stickley about these devices, who said that even though they are illegal in the U.S., there are several websites where you can buy them and have them delivered to your door.

“I mean, you shouldn’t panic,” Stickley said. “It’s real, but the number of criminals who actually use it is relatively small.”

How do Wi-Fi jammers work?

Jammers disable Wi-Fi devices by overloading the Wi-Fi frequency, or any radio frequency, and large jammers have a fairly wide range of interference, Stickley said.

“It could take out a whole house, or even a couple of houses around me, and take out all the Wi-Fi,” Stickley said.

Once the Wi-Fi is down, criminals can break in without the cameras capturing it.

How to disable a WiFi jammer?

Wired cameras won’t be affected by signal jammer, of course. Remember: The memory chip will record video whether or not there’s Wi-Fi. Plus, some security systems offer systems that send owners notifications when Wi-Fi is down.

“If you get a notification that the Wi-Fi can’t communicate with the camera, you can say, ‘OK, something might be wrong,’ and then you can call a neighbor and say, ‘Hey, can you go check it out for me?’” Stickley said.

Wall said she couldn’t imagine coming home one day to find her home ransacked by strangers.

“That would be horrible,” Wall said. “That would be horrible because you’d be worried if there was someone else in the house and wouldn’t want to go in. That would be a very scary situation.”

Wall hopes to continue living safely in Lemon Grove for another 20 years.

The sheriff’s department said technology is important to keep your family and home safe, but it’s just as important that you and your neighbors look out for each other. They can also help start a neighborhood watch program.

NBC News reports that online retailers and drone technology companies are marketing RF jammers as drone deterrents or privacy tools, thereby circumventing laws that prohibit the sale of such devices in the United States.

The warning issued by the Federal Communications Commission (FCC) states that signal jamming devices can block emergency calls and pose a serious risk to public safety communications, while also interfering with other forms of everyday communications and air navigation systems.

The FCC said: “It is a violation of federal law to use phone blocker, GPS blockers, or other signal jamming devices designed to intentionally block, disrupt, or interfere with authorized radio communications. Use in businesses, classrooms, residences, or vehicles is not exempt. Local law enforcement agencies do not have independent authority to use jamming devices; federal law enforcement agencies may use them under applicable regulations under certain limited exceptions.”

The FCC warning also states that “it is illegal to advertise, sell, distribute, import, or otherwise market jamming devices to consumers in the United States”

But NBC reports that Amazon third-party sellers, independent online stores based in China, and small domestic companies that specialize in drone-related equipment are all ignoring the law. The FCC told NBC that it is investigating the sale of jammers, including on Amazon.

As part of its investigation, NBC spoke with the CEO of a U.S. company that offers portable anti-drone radio frequency jamming devices online. The CEO told NBC that the devices are easily available if consumers have the money, but they mainly see interest from large companies and government agencies as they prepare for domestic drone terrorism.

There are more people selling “jammers.” The devices can block cell phone calls, text messages, Wi-Fi networks and GPS systems and can be used to cause chaos in public places.

The small, battery-powered devices can be used to create “blind spots” in a small area (usually around 30 feet) and have been used by movie theaters, restaurants and schools to prevent people from using their phones. But they can also cut off 911 calls, interfere with navigation near airports, and have been used to disrupt radio communications near police stations. FCC officials said they have noticed an increase in the flow of jammers, which are banned by federal law, into the United States. Many of the cheaper versions, which sell for as little as $25, are imported from Asia, according to the agency.

It is illegal to sell, advertise, use or import jammers under the Communications Act of 1934, which prohibits blocking radio communications in public

The FCC said cities including Orlando, Philadelphia, Austin, Mississippi, Charlotte, North Carolina, Washington, D.C., Cincinnati and Corpus Christi, Texas, advertised jammers on the site. Officials said they do not believe the cases are related.

“Simply posting an ad for a signal jammer on a site like Craigslist.org is a violation of federal law. Signal jammers are contraband for a reason,” Michele Ellison, director of the FCC’s enforcement bureau, said in a statement. “One person’s moment of peace or privacy could very well jeopardize the safety and well-being of others.”

Most sellers advertised jammers as a way to take an “undisturbed nap” on a bus, quiet a classroom or keep your area “free of interference,” without mentioning the more nefarious uses the device could be used for, according to the citations.

“We are increasingly concerned that individual consumers operating jammers do not appear to understand the serious consequences of using jammers,” one citation reads. “Instead, these operators mistakenly believe that their illegal operations are personal convenience or should be excused.”

Keith Grabowski allegedly advertised on Philadelphia Craigslist for a “cell phone jammer, WiFi signal jammer” for $300. He stated in the ad that “due to the nature of this item, we are disclosing very few details,” that the jammer was “not a toy,” and that “I just want to get rid of it as quickly as possible.”

Searching on Google’s shopping site showed dozens of links to devices that are advertised as signal jammers, including anti-drone devices. Google itself does not sell them, but instead directs shoppers to third-party sellers, such as electronics retailers in China. These retailers typically say they can ship to the United States, and their marketing materials are not specifically for military or law enforcement use. One Chinese seller posted a video on YouTube, which is owned by Google, demonstrating how its product blocks cell phone signals.

A Google spokesperson said the company has reviewed the cases shared by NBC News and is removing listings that violate its policy prohibiting the sale or promotion of such devices.

Sometimes it’s unclear who is behind the online sellers. One retailer called itself “Professional Global Signal Jammer Manufacturer Online Jammer Store” but did not disclose its location. The company did not respond to a request for comment. The FAQ section of its website includes the following dialogue:

“Will customs confiscate my package?”

“So far, we have not encountered this situation.”

It is unclear how many people may have illegally purchased radio frequency drone jammers from the various websites reviewed by NBC News. At least some of the companies said they sell their products to customers outside the United States, where the FCC’s strict rules don’t apply.

At the other end of the radio signal jammer market are military suppliers, government contractors and other companies that don’t generally target their products at consumers. Many of these companies have websites marketing their products, but they don’t list prices or offer options to buy them immediately. Instead, they list options to “request a consultation” or “contact an expert.”

An FCC spokesman pointed to the commission’s standing advisory on law enforcement and a 2020 federal interagency advisory on drone defense.

On Wednesday, after NBC News published the report, the FCC said it had received several investigations related to jammer marketing, including one involving Amazon.

“We are conducting several investigations into retailers, including Amazon, for possible violations of the commission’s rules by marketing and selling devices without proper FCC authorization,” FCC spokesman Jonathan Uriarte said in a statement.

Amazon did not immediately respond to a request for comment on the investigations on Wednesday.

The FCC has cracked down on radio frequency jammers and their online sales. In 2016, the commission said it had fined a Chinese online retailer, CTS Technology, $34.9 million for selling hundreds of illegal jammers over two years and selling some to undercover FCC agents.

There have been no similar fines in the U.S. since then, though other Chinese retailers still market radio jammers to Americans online, an NBC News review of their websites shows. NBC News could not determine if any of them have shipped products to the U.S.

The FCC has also targeted buyers in past years. In 2018, the FCC said it fined the operator of a Dallas warehouse $22,000 for using a jammer to prevent employees from using their cell phones while working. In 2016, the commission said it fined a Florida man $48,000 for using a jamming device to prevent people in other vehicles from talking on their cell phones during his daily commute. In 2014, Marriott agreed to pay $600,000 to settle allegations that one of its properties in Nashville, Tennessee, interfered with Wi-Fi signals at non-Marriott hotels.

Over the years, the FCC’s focus has shifted to other topics, such as combating robocalls, said Dale Hatfield, a former chief engineer at the commission.

“Their enforcement activity seems to be more targeted at things that are more directly visible to consumers,” he said.

It’s hard to determine how big a problem illegal jammers are because signal interference is often brief and hard to document, said Hatfield, an adjunct professor at the University of Colorado Boulder. For the same reason, he said, interference cases are difficult for the FCC to handle.

“It can be very intermittent,” he said. “How do you go back and figure out why?”

Former FCC Commissioner McDowell said the commission’s enforcement efforts are largely determined by the types of complaints it receives.

“Typically, the enforcement process comes into play when an outside agency notifies the FCC of a situation,” he said.

Jamming devices have many potential uses, from disrupting unwanted drones to disrupting Wi-Fi networks to disabling doorbell cameras. On a Reddit message board dedicated to Ring doorbell cameras, some posters complained about people using jammers to disrupt the cameras and avoid detection during thefts. One Reddit poster said the irony was that Amazon seemed to be profiting from both sides: Ring is a division of Amazon, and Amazon is also a marketplace for buying devices that can disable Ring cameras.

Amazon did not respond to questions about jamming Ring devices.

Jammers, or radio frequency “blocking,” are also a frequent topic of discussion in online forums dedicated to people who believe that the government or others are conducting deep surveillance on them, a belief or phenomenon sometimes referred to as “gang stalking.”

Potential markets for anti-drone systems such as RF jammers include large businesses and organizations that are concerned about drone terrorism but are not legally allowed to use jammers. Last year, four major sports leagues, including the NFL, urged Congress in a letter to congressional leaders to allow state and local law enforcement to use anti-drone capabilities.

Prison officials in some states have said they want legal authority to use jammers to prevent prisoners from using their phones.

But under current law, the list of government agencies authorized to buy and use radio frequency jammers is short, including the FBI and the Department of Homeland Security, as well as the Departments of Energy and Defense.

Companies that specialize in drone countermeasures often focus on foreign buyers.

Drone defense company IXI Electronic Warfare warns on its website that drones pose a potential threat to stadiums, prisons and airports, and says drones can help “eliminate threats in seconds,” including using a radio frequency jammer called a “Dronekiller.” But overall, stadium operators, prisons and airport authorities do not have the legal authority to buy such products in the U.S.

So now that thief’s are using WiFi jammers that apparently can be bought for $40, what is everyone turning to to protect your property?

News of break-ins these days show quite a few security camera captures, but in many of them the perpetrator is covering their face. So ultimately I’m not so sure how much security cameras (even wired ones that capture clear images) can really protect a property.

It appears even traditional alarm systems would be disabled by a signal blockers since all the sensors’ signal would be blocked as well.

I have NEVER considered a WiFi connected device to be any sort of serious security device. For a serious security device, it needs to be wired (power and data), and the video recorded locally with serious backup power (no, a 15 minute UPS does not qualify). I do have what would likely be considered a Pro-sumer level video camera system, with hours of backup power.

With that said, I have over 40 Wyze cameras, and I do use them regularly as they are quite a bit less expensive than my wired system, and the software is more convenient for a quick look remotely.

Two of the most common attacks are a simple broadband signal generator and a specific WiFi De-Authentication. In the case of the first, the jammer simply broadcasts a strong enough signal that the intended signals are covered in noise. An audio example would be trying to talk back and forth with someone 100 feet away in an empty stadium. That would likely work fine, but now add 50,000 other people and there is so much noise that the person 100 feet away can not be heard. A broadband jammer is a quite simple device.

A De-Authentication attack is an smart device that to keep this simple, impersonates the WiFi client and sends a command to the WiFi access point telling it that the client is disconnecting. Note that WPA-3 prevents that by encrypting the management packets. However although the WPA-3 standard has been out for quite a few years, most IoT devices do not support it.

Both of these attacks happen between the WiFi client and access point, so a firewall or anti-virus never get involved.