To prevent the theft of your Automobile, use the Layered Approach to Protection:
Layer 1–Common Sense
You should always secure your vehicle, even if parking for brief periods, by:
Removing your keys from the ignition
Locking your doors
Closing all your windows
Parking in a well-lit area
Layer 2–Visible or Audible Deterrent
The second layer of protection is a visible or audible device, which alerts thieves that your vehicle is protected. Popular second layer devices include:
Audible Alarms
Steering Wheel Locks
Steering Column Collars
Theft Deterrent Decals
Tire Locks
Window Etching
Layer 3–Vehicle Immobilizer
The third layer of protection is a device which prevents thieves from bypassing your ignition and hot-wiring the vehicle. Some electronic devices have computer chips in ignition keys. Other devices inhibit the flow of electricity or fuel to the engine until a hidden switch or button is activated. Popular third layer devices include:
Smart Keys
Fuse Cut-offs
Kill Switches
Starter, Ignition and Fuel Disablers
Layer 4–Tracking System
The final layer of protection is a tracking system which emits a signal to a police or monitoring station when the vehicle is reported stolen. Tracking systems are very effective in helping authorities recover stolen vehicles.
*Reprinted with the consent of the Coalition Against Insurance Fraud