no more anonymity

This article in Popular Science describes a guy's experiment to try living off the grid and leaving as little personal information in his wake as possible. His conclusions: it is no longer possible to do this.

Donald Kerr, the principal deputy director of National Intelligence, who proclaimed in a speech last October that “protecting anonymity isn’t a fight that can be won.” Privacy-minded people have long warned of a world in which an individual’s every action leaves a trace, in which corporations and governments can peer at will into your life with a few keystrokes on a computer. Now one of the people in charge of information-gathering for the U.S. government says, essentially, that such a world has arrived.

The reporter's own experiment follows that setup.