Wireless technology lends itself to certain security applications, especially those involving mobile vehicles such as cars, boats, and trucks. Also, a wireless link can alert you to a fire or intrusion at your home or business, when you are not physically present at the location.
One well-known wireless security system for cars employs a device that transmits a radio signal when the vehicle is being improperly operated. The system circuits and antenna are concealed, although there might be a warning sticker on the car. If a potential thief knows your vehicle has a wireless security system, he or she will probably not want to spend a lot of time snooping around to find and disable the system.
If someone manages to steal your car and it has a wireless security system installed, and if you’re lucky enough to find out about the theft within a short time, tell the police about the security system. The police have a wireless transmitter that sends out a signal that contains the vehicle identification number (VIN) for your car. This signal is received by the equipment in your car, which starts up its own transmitter. Using radiolocation equipment, the police can pinpoint the position of your car on a map. From there, mobile direction-finding radio receivers can be used to reach the car. In some cases the police have caught thieves while they were actually driving stolen cars.
A home or business wireless security system operates like a paging device or beeper. If something happens that triggers the security system, a radio signal is transmitted that sets off a small radio receiver you carry. Such a system will ideally telephone the police and/or fire department as well. If you happen to be reasonably near your home or business, you can drive to the site.
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