Just a side note for those looking to have GPS tracking installed.
Should you go the contract type programs, there are some real nasty little clauses hidden inside some of these contracts.
One of the worst is should you "not" notify the supplier within six months prior to the contract term finalizing that you wish to terminate your contract, it automatically rolls over for a further period. Mostly another 12 mounts subscription. These are auto deduction type subscriptions from your bank.
So please read the fine print