It seems that Apple and Google are not alone in the collection of location information. Here is an article written by by  that exposes Microsoft's use of location information via smart phones. There is a growing problem in the United States over location privacy. It seems law enforcement agencies do not require a warrant for historical location profiles, only for 'real-time' location stamps.

One privacy concern is that location databases can be a gold mine for police or civil litigants: requesting cell phone location information from wireless carriers has become a staple of criminal investigations, often without search warrants being sought. It's not clear how often legal requests for these records have been sent to Microsoft, which said it could not immediately answer that question, or whether its lawyers require a search warrant signed by a judge.

Even though police are tapping into the locations of mobile phones thousands of times a year by contacting AT&T, Verizon Wireless, and other mobile carriers, the legal ground rules remain unclear, and federal privacy laws written a generation ago are ambiguous at best. The Obama Justice Department has claimed that no warrant is required for historical location information, a claim opposed by a coalition of companies including Google and Microsoft but not Apple. (CNET was the first to report on warrantless cell tracking in 2005.)

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