Intro to Foursquare, Brightkite & Location-Based Social Media
Socialized
NOVEMBER 4, 2009
The most widely understood method is through Global Positioning System (GPS) data obtained from navigational satellites in geosynchronous orbit. meters at a 95% confidence level…(and) Real-world data show that some high-quality GPS SPS receivers currently attain better than 3 meter horizontal position accuracy.”
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