Survival Global Positioning Satellite

During the war when the US was fighting the infected in the states. They decided to hand out these devices called the SGPS aka Survival Global Positioning Satellite where it would help people to find supplies,vehicles, and detect the infected. How this works is one of the military satellites would zoom where the user is and detect anything. This hacks into street cameras, cellphones, and anything that can detect items while detecting the "infected" it uses thermal signatures to find the cold blooded infectees.

This is a huge help to surivors because it can help them to surive and avoid trouble. But sometimes trouble is requried in order to surivor.