The technology that is used in tracking people, automobiles, objects located anywhere on the earth is Global Positioning System. The know-how uses satellite signals to locate the distance between the object and the satellite and the time when the measurement was done. Although invented for US Defense team, the concept has found immense use in the cell phone tracker system. As the signal used in Global Positioning System methodology can go through tangible and opaque objects, it is simply effective way to locate cell phones that may be kept in a pocket, suitcase, or wrapped up in a cloth.