Here you can find your own jammer

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.