The World's First Personal Navigation Device 1
It may not have been able to tell you when to turn or give you live traffic updates, but the Plus Fours Routefinder was the state of the art navigation system of its day. Invented in the 1920s, the Routefinder relied on paper maps wound around wooden rollers, which the driver turned en route. It was intended to allow drivers to navigate around the UK, but with so few cars on the roads it never caught on.
The first application of Net 2.0 (Score:2)
If you had a pencil, you could add your comments to each map.