Apple Tells Congressmen It Batches, Encrypts Location Data - Web Services Web 20 and SOA from eWeek: "However, this only happens when users have toggled their device to turn the services on and only when the user runs an application requiring location information.
At that point the device 'intermittently and anonymously collects cell tower and WiFi access point information from the access points it can see, along with the device's GPS coordinates if available.'
Web services that leverage location such as Google Latitude, Google Buzz, Twitter Foursquare and Gowalla are becoming increasingly popular among users. Google, Yahoo and Bing are negotiating with Foursquare to use its location-based check-in data in their core search results."
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