sounds like lo-jack....cant imagine tracking without a subscription / fee.
Depending on where you are - you could install a "ring
" type camera that would alert you to the presence of humans at your storage location.
Mine is stored in a locked individual storage bay - so i could (if i had wireless access) install a camera in my storage bay or inside the coach to alert me to movement in my storage unit.
'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over