from the lojack pamphlet, lojack is installed, you register at lojack.com or by calling, when the vehicle is moved without the early warning key pass, the lojack network will notify the customer via email, phone call etc, the theft is confirmed by the customer who then contacts police and notifies lojack for additional assistance, police then recieve signals from car aand track the car and return it to the owner. people claim to have there cars back in 2 1/2 hours.