Whenever you surf, the web server you connect to will log your IP address, what web page you asked for, and the time. In the map request, you ask for a specific address to print a map for, with that address printed on the map. So all they had to do was scan the logs for who got a map of that address, and trace back who's got that IP address
Most people also aren't aware that your location can be traced by your cell phone, even if you're not in the process of making a call (the phone system needs to keep track of which cell antenna you're closest to, so it can route incoming phone calls to you. Once the cops know approximately where you are, there's equiptment that will let them home in on your particular cell phone)
That's how the leader of the Chechnyan rebellion was killed.
The United States used a satellite to locate his cell phone,
and then told the Russians where he was.
No more rebel leader.