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Originally posted by sty
they do not need GPS to find your exact position. They just need you to keep your phone on, then the position can be calculated using the position of 2 nearby antenas . ( you do not even need 3 hehe ). So if you want to hide your location, turn your mobile off (make sure it is really off )
[edit on 2-12-2008 by sty]
Originally posted by spitefulgod
depends on the mast density but in a city it's to within a few meters, in rural areas it can be up to a couple of miles.
"over the last years, estimating a person’s activities has gained increased interest in the artificial intelligence, robotics, and ubiquitous computing communities."
"the concept of a personal map, which is customized based on an individual’s behavior. A personal map includes personally significant places, such as home, a workplace, shopping centers, and meeting places and personally significant routes (i.e., the paths and transportation modes, such as foot, car, or bus, that the person usually uses to travel from place to place). In contrast with general maps, a personal map is customized and primarily useful for a given person. Because of the customization, it is well suited for recognizing an individual’s behavior and offering detailed personalized help."