For the control and security of the person or worker carrying the TWIG Discovery Pro tracker in their service routes or deliveries tasks and in their assigned automatic vehicle dispatch offers a Panic button assigned as key, by actuating the key send SMS alerts activate voice communication with predefined emergency phones. Besides activating the module alert "man down" the Discovery Pro will begin issuing emergency messages and send them to predefined numbers or to a control center. TWIG Discovery Pro is a very safe tracker for all kinds of needs in the GPS location of people, lone workers or elderly care.