Notification options: Go with equipment that send out alerts through SMS or app notifications for speed, geofencing, or unauthorized movement. Some (while none examined below) will add VHF tracking along with GSM positioning which features much more depth and larger resistance to blocking, as it will eventually function underground and https://www.trackerfit.co.uk/blog/stolen-car-recovery-why-24-7-monitored-trackers-make-a-difference/