Though the private investigation industry has a longstanding history as a legitimate field with private investigation businesses existing since the 1800s, it has changed as tools and resources for investigation has evolved. For private investigators, the reasons to surveil an individual are nearly limitless — investigations can arise out of criminal or civil matters, and GPS technology provides concrete evidence for private investigators hired to conduct surveillance.
Whereas in years past, surveillance would have to take place in person with a private eye watching from a distance, perhaps taking pictures or video, GPS allows investigators to handle the job without the personal intrusion of being watched and followed in person. Furthermore, GPS devices give private investigators the ability to multitask and complete other tasks while still completing surveillance. GPS devices can also be programmed to only activate and transmit a signal when at a targeted location.
GPS devices, which are relatively small in size, can be affixed to the exterior of a vehicle without altering the vehicle. The device then sends data to a host about where it has traveled using the satellite.