If you or a previous owner ever took out black box insurance, they install a GPS/accelerometer in your car. The insurance companies rarely bother to remove the

If you or a previous owner ever took out black box insurance, they install a GPS/accelerometer in your car. The insurance companies rarely bother to remove the trackers, so if you've had multiple policies you may end up with a couple of units wired in. Sometimes the mechanics will rip out the old ones, but they put them in different places and they're too busy to check everywhere (install is a 5 minute job). Usually they'll tell you that the device will be turned off once the policy ends.