Skyhook Wireless's pool of anonymized location data, gathered from cell phones that have used its services over the past 24 months, shows user behavior in every major city in North America, for every hour of every day of the week at a resolution of 100 meters. This is enabled by the 300 million check-ins received daily from every iPhone, iPad, Snow Leopard-powered laptop, as well as Dell devices and a growing number of Android-powered smart phones.
Several other companies are using similar technologies to map human activity across time and space--an activity first referred to as "reality mining." However, no other company has made available a comparable amount of data to independent developers.
