The GalPos device is the Gravity Age equivalent of the GPS System of earlier eras. Equipped with star charts and a link to the galactic satellite network, the GalPos device (known also as a GPD) triangulates its own position based on distance between satellite relays and its knowledge of stellar cartography. If the GalPos is taken to a region of space where it cannot contact the galactic satellite network, or to a region of space not included in its star charts, it does not function. Otherwise, the GPD can be used to indicate what planet the character is on, or what star system she is in (if not on a planet).

A GalPos device with the satellite up-link gadget can function as a GPS receiver on worlds where such systems are available.