The one that stops is the one worth knowing about. A thief who jams, shields or destroys a unit triggers no movement and crosses no boundary. Silence is the only signal left, and CellWatch keeps the roll call.
Reports on your schedule while parked — as often as every 5 minutes — and densely the moment it moves
Raises an alert on unplug, towing, jamming and area crossings
Shows a fortnight of check-ins, so a gap is visible at a glance