Broadcasting an animal's coordinates could also be done accidentally-many smartphones and GPS-enabled digital cameras automatically embed geotagged data, which lists the physical coordinates where a photo was taken, in the EXIF data that is part of image files. If the picture is uploaded to a social media site with the geotags intact, it could leave the animals vulnerable.
But it's not all bad -- there have been several successful conservation projects that used GPS for good. Most importantly, GPS collars fitted to cheetahs, moose, wolves and countless other animals can give the most accurate information about population sizes, range and natural behavior -- vital indications of the species' wellbeing. They can use these data to inform conservation programs and, hopefully, save entire species.
You can see one fascinating project that fitted the world's largest land animal with some of the world's largest GPS collars in this video: