Luke, a wifi network cannot be confined by walls and spills a few meters, sometimes dozens of meters, outside the premises where the network is installed. All you have to do is stand/park in that area and you're connected. There are softwares that you can run on the computer that will beep whenever you cross one of these networks. Usually these networks are setup so that you can't access the network owners computers or servers but the Internet connections is left open and unprotected. The process of roaming around looking for these networks is called “War Driving”. Search the net for more info on this, there are even sites which lists such hot spots.
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A.B.
OasisPhoto.com – Images from the Magical Sahara.
ShortWheelbase.com – Jeep preparations.
Coordinates Converter – Lat/Long <-> UTM Conversion Tool.
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A.B.
OasisPhoto.com – Images from the Magical Sahara.
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