GPS stands for Global Positioning System. Many devices come with in-built GPS. Phones, digital cameras, in-car navigation systems, many fitness trackers and smart watches come with GPS.
The risk with GPS is that, in the wrong hands, the location information collected can be used to track your whereabouts. Someone with access to GPS location information can work out where you go and what you do, and even where you live.
This web page explains how to reduce these risks.
It includes two short videos showing you how to turn off location services on your device.
The web page is on the website of the eSafety Commissioner of the Australian Government.