To block GPS signal, it is much more difficult than just blocking a
radio signal with basic radio interference. There are many places
where we need to disable GPS device. If you were tracked by bad guy
who put a GPS device in your car, do you want to block it? When
GPS jammer has been created (specifically by the government, military
organizations and spy or privacy gadget companies), most people do not
have the technical capabilities to create their own home made device.
At the beginning, the GPS Jammers were built for military uses, for
example, to confuse the enemy on where their exact location is or
where the enemies GPS guided missiles or bombs will fall. However, in
our lives, there are a few civilian uses for jamming GPS signals
including the ability to conceal oneself or one’s vehicle in the case
that it is being tracked by a GPS receiver.
Before we buy or use
GPS signal
jammer, it should be noted that most GPS jammers are illegal to
build or use in some countries or localities due to the potential for
misuse. For example, a GPS jammer can interfere the signal of aircraft
and other vehicle instruments, possibly causing mishaps. Before you
buy the GPS jammer, you should study the telecom and communication law
of your country. Also, you should make sure you won't use it near any
airport or harbour or other public facilities that use GPS system.