Before GPS and cellular devices gave drivers directions, Long Range Navigation (LORAN) beacons helped sailors and pilots to find their way during their travels. Powerful radio pulses emanate from radio transmitter sites. Skilled operators are able to determine latitude and longitude if they’ve received at least three different beacons. Signals from close transmitters arrive earlier than those from far away sites, because radio energy constantly travels at the speed of light.
Unlawful reception of cellular phone signals is a serious offense, and LORAN world band transmissions take a great deal of skill to utilize. It doesn’t seem like any other navigational option is available to most people. Countless individuals rely on commercial solutions.
Individuals living in a technological singularity might very well use a radically different system than the status quo some day. People could be tuned into a worldwide navigational network that would allow them to find their way with RF impulses. While the connection between radio energy and cancer is poorly understood, scientists might discover a way to make this arrangement safe for human users. Cybernetic implants could perhaps be used to interface neurons with radio communications. If nothing else, it would give an entirely new meaning to the phrase tin foil hat.