This 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 of fuel to the engine until a hidden switch or button is activated.
Popular third layer devices include:
- Smart keys
- High security locks & keys
- Fuse cut-offs
- Kill switches
- Starter, ignition and fuel disablers