RE: A free lunch with Edward Snowden

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A free lunch with Edward Snowden

in freedom •  8 years ago 

I was travelling through Europe for a few months without cell phone service. I remember being in Venice with no service at all, yet Google Maps still had a blue dot that knew exactly where I was.

freedom
8 years ago by

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      ·  8 years ago 

    Well. That's call Offline map browsing. The blue dot works because the gps signal is working without internet.

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        ·  8 years ago 

      And the second point they know the koordinates of some wirelesshotspots and with that information google-maps can make some triangular-calc's even when your not connected with those spots.

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