Three GPS locators have been found in Sons of the Forest so far, and these gadgets can be useful if you want to keep track of a particular location so you can find it easily later. Initially, these are marked by purple pips on your own GPS that you picked up at the start of the game. If you've befriended Virginia , you can use one to keep track of her too, so it's worthwhile having one or two in your backpack for such a situation... Read more.