Unsuspecting criminals with GPS devices are sharing far more than they may think in their satnav devices. Deleted data, it turns out, is not deleted in some cases, meaning detectives can track past destinations. Further, if used in conjunction with a cell phones, the devices may store old phone records of incoming and outgoing calls. TomTom was not aware of London's Metropolitan Police reporting on the use of devices in crime investigation in a scholarly journal (Digital Investigation). The company states they only turn over data with a court order.
Also of note: Met detectives learned the tricks of the trade from GPS wikis that detail how to share POIs and the like.
- New Scientist