I have Lo Jack on my 03 H2, as a Ex-Police Officer I think Lo Jack is great, once your car has been reported stolen, the police dispatcher activate Lo Jack, and the closest police car to your vehicle will pick up the single from Lo Jack and will start tracking your car. I would say that 80% of the time we our able catch the bad guy in your car.
The other 20% we find the car and the bad guy is on the run.
The patented LoJack System includes a small radio frequency transceiver hidden in up to 20 places in a your vehicle. Each LoJack System has a unique code that is tied into the Vehicle Identification Number (VIN). When a theft is reported to the police, a routine entry into the state police crime computer results in a match of the LoJack System's unique code against the state VIN database. This automatically activates the LoJack System in your car, which emits an inaudible signal. Law enforcement authorities who are equipped with LoJack vehicle tracking units - in their police cruisers and aviation units - are always listening for a LoJack signal. Police use the LoJack vehicle tracking units to track and recover your LoJack equipped vehicle.