you'd be able to choose your area - auckland / chch / dunedin / welly etc and only get notifications for users in that aread that were loaded... and youd have the choice of notifications on or off, (same concept as most apps, where you can choose to have them on or off)
still in the planning stages, might not eventuate to anything, all i know is there is waaay to many cars going missing and doing anything is better than nothing