GPS interference is the process of using a frequency transmitting device to block or interfere with radio communications. Types of communications that may be blocked include phones, text messages, GPS systems, and WiFi networks. This term is also known as GPS spoofing, and the device used can also be referred to as a cell phone signal blocker. The GPS jammer was originally developed by the military to mislead the enemy about the location and target.
According to the latest statistics from experts, tens of thousands of people in the UK are using "GPS jammers" that prevent car GPS tracking, and can stop tracking systems used to detect stolen cars and import. Sell, buy or own these devices are legal, but it is illegal to "deliberately use" such devices to block GPS signals.
“This means that for anyone trying to track a vehicle, it will disappear on the map,” Curry said. People use them because they don't want to be detected. GPS jammer is typically small devices that plug into the lighter ports of the vehicle and emit radio signals that can overpower or flood weak signals such as GPS or other signals.
GPS jamming devices can be used in a variety of applications: hiding, changing or obscuring positioning signals from GPS units; hiding the location of devices or vehicles; prohibiting mobile devices from making or receiving calls, text messages or emails, etc. Many GPS interfering devices can also interfere with each other.