Google lets you opt out of Wi-Fi mapping
By Edwin Kee on 11/15/2011 05:44 PST
Whenever you see a Google Street View car
snap photos of the street around, it will also rely on
a laser radar in order to obtain the shapes of buildings
correctly in Google Earth, while searching the airwaves
for a couple of key ID numbers on the Wi-Fi networks at
each property – namely, the router’s Media Access Control (MAC)
address and the Service Set Identifier (SSID).
Those who were relaxed in securing their Wi-Fi networks
also ended up with Google picking personal data in the process.