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Can vehicle-mounted GPS signal jammers effectively prevent tracking and positioning?

Can vehicle-mounted GPS signal jammers effectively prevent tracking and positioning?

  • 2022-12-31


In order to prevent others from secretly installing positioning devices on their vehicles, thereby revealing personal privacy or revealing their whereabouts, some customers order some common GPS signal jammers from the Internet and want to install them on their cars. I think that after taking such a move, I can protect myself. Unfortunately, if you are not familiar with the working principle of the device, you just buy a GPS signal jammer, which often backfires. After a period of time, you find that your whereabouts are still being controlled by others. Why is this? Can car GPS signal jammers effectively prevent tracking and positioning?

This has to be analyzed from two aspects: the first is to understand what type of positioning device is installed on your vehicle. Of course, as the person concerned, he must not know where others will install the locator on the vehicle, so naturally he cannot know what type of positioning device it is. We can only take into account all the positioning methods that the positioning device can take. The reason why the positioning device can realize the positioning function and send the position information to the remote receiving terminal will use at least two signal types. The first type is GPS positioning signal. The GPS positioning referred to here is just a general term. It not only includes the United States GPS satellite positioning signals, including at least China's Beidou satellite signals, Russia's GLONASS satellite navigation signals, European Galileo satellite signals, and so on. The second type is data transmission signals. Data transmission usually adopts the built-in mobile phone SIM card, and uses the mobile phone's 3G, 4G or 5G network signal to receive and send data to the receiving end. At the same time, the use of mobile phone SIM cards can also take into account non-precise positioning in a rough range, which is mainly achieved through mobile phone base stations. Compared with GPS positioning signals, its positioning accuracy is much worse.

On the other hand, or to realize that the vehicle-mounted GPS signal jammer can effectively prevent tracking and positioning, it is necessary to carefully check the specific technical indicators and functional parameters of the device when purchasing a vehicle-mounted GPS signal jammer. For the sake of low price, some customers choose devices that only have GPS signal interference, ignoring the interference that should be aimed at both mobile phone positioning and mobile phone data transmission signals. This is the real reason why some vehicle-mounted GPS signal jammers are obviously working all the time, but they still cannot effectively prevent others from tracking and positioning.

Even if the above two aspects are well considered, there is still an important matter that users must pay attention to seriously: if it is necessary to prevent tracking and positioning uninterrupted throughout the whole process, then it is necessary to ensure continuous power supply and continuous switching work of the car GPS signal jammer, any time It cannot be turned off during the period. Since the positioning equipment concealedly installed in the car is always working, once the vehicle-mounted GPS signal jammer cannot transmit interference signals due to abnormal power supply, even a short gap time may still cause the leakage of positioning information.

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