NPR's John McChesney reports on some of the uses of Global Positioning System, or GPS. A newer use of GPS is to beam location based advertisements to cell phones, or hand-held computers.
Copyright 2000 NPR
NPR's John McChesney reports on some of the uses of Global Positioning System, or GPS. A newer use of GPS is to beam location based advertisements to cell phones, or hand-held computers.
Copyright 2000 NPR