Electric cars are vehicles that use electricity as a source of power, which requires that its body weight should not be too large, or it will affect its power and drive. The characteristics of small electric light also makes it easy to theft, many of the electric car owners in order to make their car is not theft by thieves, they will be a small GPS tracking device installed in electric hidden places, so that after the theft of can quickly recovered. But as things have gone up, burglars have been clever enough to block signals from GPS satellite signals, mainly using
GPS jammer.