Although the average altitude of GPS constellations is 20,200 kilometers (12,550 miles), which may not be as high as the average altitude of communication satellites in geosynchronous orbit, they still have a long way to go. Given this incredible distance and the size of the antenna on most GPS-equipped devices, it is no wonder that the received signal is very weak. In fact, it is so weak that it is usually below the noise floor. Only with clever algorithms and a little witchcraft can your phone turn the whispers of the stars into something similar to useful information.
It is this vulnerability that makes these types of cheap cell phone jammer possible. It doesn’t take much to overwhelm legal signals. Keep in mind that devices like this will not try to imitate GPS satellites, but just send out nonsense that is large enough that the real satellites can no longer be heard.
When the jammer is turned on, we can clearly see how the already weak signal is completely cleared through the pattern sent by the device.
There is no competition. The legal signal is tens of thousands of miles away, and this thing screams in range. I haven’t tested the range of this device, mainly because I don’t want to open it longer than necessary, but it can perform tasks of at least a few meters.
Imagine someone deployed a Wi-Fi jammer in a large retail store on Black Friday. These types of IoT security disasters are fast approaching.
Last summer, DePoe-Hughes filmed a rather strange scene in Manchester Castle Shopping Park in the fall. If the door is locked, it cannot be unlocked. The situation is just the opposite. The annoying car siren refuses any attempt to silence it. DePoe-Hughes told John Leyden of The Register, “Other people have complete control of our car for more than half an hour.”
Leiden asked Ken Munro, a security researcher at Pen Test Partners, about his thoughts. Munro explained: “The purpose of this attack is to interfere with radio signals from smart keys to cars.” “Jammers are easy and cheap to obtain online from overseas. It is also easy to make jammers with components from electronic stores.”