Auto Time Zone

As GPS technology becomes cheaper and more compact, it is time to start thinking of its uses for purposes other than navigation. One possible use is the keeping of time for those travelling through time zones. A GPS chip could be intergrated into a basic watch, with an output that could forward or rewind a watch, 1 hour, when the watch crosses a pre-programmed time zone line. Currently, travellers often make the mistake of changing their watch or notebook or PDA time upon arrival at an airport. This can lead to botched meetings or schedules. The GPS time chip could fix this problem in watches, as well as other technologies. On a side note, other advantages would include: possible tracking of stolen watches or computers, cheap watches at the airport (they would probably subsidize expensive technology for the purposes of tracking customer travel patterns).