Find out how scientists in Namibia, Africa, are using GPS to track and to conserve wildlife. People and places - Mapping - GPS Learning Points A GPS device is constantly receiving satellite signals and updating its position on the map. GPS can be used to track wildlife, allowing researchers to monitor an animal's movements. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.