> The United States is about to give the now nearly ubiquitous Global
> Positioning System an $8 billion overhaul. The improvements, which
> involve replacing each of the 24 aging GPS satellites, are estimated
> to take over a decade to complete, and will see the triangulation
> margin of error decrease from 20 feet to around 3 feet. The move comes
> as more and more devices, from phones to parking meters, are
> incorporating GPS units into their design.
Why would a parking meter need a GPS? It doesn't move around.
A surveyor could tell you its location to centimetre accuracy
and that would be all you need.
Nick
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