Abstract: An article tracking device that can be attached to or otherwise located with movable and non-moveable articles has a memory that stores a subset of spatial zones and corresponding time intervals during which the spatial zones are valid. The device is adapted to periodically read the current time and its current position from the position determination system and to determine whether a spatial zone corresponding to the current time exists. If a corresponding spatial zone exists, the device determines whether its current location is within the spatial zone and performs an action in response to this determination.

Abstract: An improved article tracking and locating system comprising a global positioning satellite receiver built into a peripheral component interconnect board, together with means for transmitting analog and digital signals over the cellular control channel to a central location where the desired information can be made available immediately over the Internet to appropriate persons.