美国汽车防盗用的汽车跟踪装置主要有两种系统: 1.“洛一杰克”系统:可在8个州使用。据称95％装有该系统的被盗车可以找回。车主通过电话线路自动该系统,使之与警察局的无线电网络相连并发出寻呼信号。这样,警察局就可以跟踪汽车和盗车贼。 该系统存在的问题是,如果车主没有马上发现汽车被盗,盗车贼可以把车开到没有使用该系统的州,这样警察局就无法跟踪被盗汽车,除非盗车贼又把汽车开回使用该系统的地区。洛一杰克系统的价格约为595美元。 2.密码报牌信号截收系统:价格1195美元。它可以跟踪位于蜂窝电话网所及的任何地方的汽车。该系统装有一台蜂窝电话。当截收系统察觉到有人闯入或盗窃时,电话就会自动拨通监听 There are two main types of car tracking devices for car immobiling in the United States: 1. “Locke Jack” system: available in eight states. It is said that 95% of the stolen cars equipped with the system can be recovered. The owner automatically connects the system to the police station’s radio network and sends a paging signal over the telephone line. In this way, the police can track cars and car thieves. The problem with the system is that if the owner does not immediately find the car stolen, the thief can drive the car to a state where the system is not in use, so that the police can not track the stolen car unless the thief drives the car back The area where the system is used. Locke-Jack system costs about $ 595. 2. Password sign signal interception system: the price of 1195 US dollars. It tracks cars located anywhere in the cellular network. The system is equipped with a cellular phone. When the interception system detects someone breaking into or stealing, the phone automatically dials to listen