A low-power location apparatus for returning to a user to a location
including a system unit configured to compute a location using radio
signals, a user interface unit having a display area and first and second
buttons, a memory unit, and a computational unit configured to interact
with the first and second buttons. The computation unit retrieves a first
location from the system unit and stores the first location in the memory
unit upon selection of the first button by the user. Further, the
computation unit retrieves a second location from the system unit and
calculates a relative three-dimensional direction from the second
location to the first location upon selection of the second button by the
user. The relative three-dimensional direction is graphically represented
on the low-power display area of the user interface unit.