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• WiFi based solutions are not the best complements to A-GPS either. The iPhone may have in-built WiFi but not all other phones in the market today have WiFi capabilities. Even if new phones were to be shipped with WiFi capabilities, it would take years before they achieved a meaningful level of penetration. The reliability of WiFi based solutions is also worth thinking about since the Access Points (AP's) are always a moving target. In order to keep the information up-to-date one has to physically drive areas across the country periodically which turns out to be an expensive proposition. In reply to: "Skyhook combines GPS and Wi-Fi for location"

  July 1, 2008

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