Once you've parked your vehicle you use a simple 1-button process from your cell phone to arm the Matrix MX3 unit. Thereafter, if the vehicle moves prior to you disarming the system, the MX3 unit alerts the National Operations Centre that, in turn, will immediately begin monitoring the vehicle's movements and then contact you.
If required, the tracking and recovery process is activated. And just in case you were wondering, the "arm" and "disarm" calls from your cell phone are absolutely free!