I have used "Find my Mac" to find our Macbook Pro. It was pretty accurate and was able to place the computer within 10 feet of its actual location. I started thinking about how it actually works, since the MBP doesn't have a GPS. How does "Find my Mac" work?
![How does "Find my Mac" work, since there's no GPS in a Mac?](https://cdn-ak-scissors.b.st-hatena.com/image/square/f105dec0822bf4ed8289c827c3babbeba1e5174d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fapple%2FImg%2Fapple-touch-icon%402.png%3Fv%3Db514451ec60c)