The jammer’s immune system blocks the signal from the device

According to data from the American Association of Vehicle Tracking and Protection Companies (ANERPV), from January to December 2019, their employees registered more than 3,000 robberies, 75% of which were carried out by disruptors. These devices block cellular signals, radio communications and data transmission. As a result, the device is completely isolated and its location cannot be seen.

Since January 25, the Ministry of Transportation (SCT) has banned the use and sale of these devices. In order to protect network operators, Mexico’s satellite tracking brand provides technologies such as LBOX anti-portable jammer solutions, which can automatically run security protocols to secure equipment. Manuel de la Torre, CEO of Webfleet Solutions, said: “If one of the parameters is not met, the device will paralyze the vehicle and it will not be able to move even if it is disturbed.”

Other brands have also developed other “immune” interference technologies based on Sigfox (long-range wireless network), which allows assets to be found even in the presence of interference signals. GPS devices with anti-interference devices will stop recording the location of the device, but they can be protected locally by cutting off the accelerator pedal to prevent the device from continuing to circulate. Devices with anti-interference capabilities can in turn (approximately) continue to report their location, even if there is a signal blocker in the device.

EasyTrack said: “Because of the features provided to us by the Sigfox network and the features we integrated into the satellite tracking service, we can locate a wide range of assets for many years.” FOX1 has been developed. But here comes the question: can the immune device receive the signal and block the device like an anti-jamming transmitter? The answer is yes. We will explain to you.

As long as the Sigfox device has a digital output, the immune system against the jammer will stop the device. However, with this technology, commands can only be sent to the device every 6 hours (up to four times a day), which is why they are not used to deactivating motors. Security experts warn that despite the further development of anti-jamming technology, most GPS devices on the market will not trigger any reactive measures due to signal suppression or fail to configure the correct calibration protocol when blocked.