Do you surf the web but wonder how those sites you visit seem to know you? Many sites gather data, such as IP addresses and search parameters, from users who visit the site. Some pages also leave cookies or “spyware” on the user’s computer so that the site can differentiate users and customize content based on [...]

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Many cell phones today come with a convenient GPS feature that allows the user to find his or her way around unfamiliar territory. What some people don’t realize, though, is that others can monitor YOUR whereabouts because of the signals your cell phone sends out.
The June 4, 2008 issue of Nature featured an article about humans and where [...]

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