In terms of working an operation, this obviously makes the whole thing safer (as the team don't need to be right on the tail of a target) but also makes things considerably cheaper. Whereas historically a team would have to observe a client 24/7 to get a detailed picture of his or her movements, they can now work 'reactively' using the intelligence supplied by the tracker to decide what is and isn't worth looking at.
So how do these devices work?
Basically put, they use a SIM card (as found in mobile phones) to send GPS data over the phone networks to a central server. We (and our clients) can then access this server via a webpage to see exactly where the device is using a password unique to that target and their case. They are accurate to around 10 feet anywhere on the planet and never sleep, thus never missing a potential lead!
The devices themselves are about the size of your palm and are attached to the target vehicle using two very strong magnets (and no, we haven't ever had one fall off!) They are completely self contained with a battery that can offer up to six months of tracking from a single charge. Attaching them to the car takes just a few seconds and tracking commences immediately.
Logging onto the tracking console (shown below) our clients can sit back and watch the vehicle move around in live time and get an updated location at intervals from 5 seconds to 6 hours. We can highlight potential danger areas (mistresses house?) and the tracker will text us automatically to tell us when the target goes there. We can also put the tracker to sleep or change the settings remotely to make sure that the tracking data we get is as accurate and relevant as is possible.