I cannot help but be amazed by what people can do and are willing to do with their phones. In the video below there’s a nice clip of some geniuses who turned their Android OS HTC G1 into a metal detector.

This is something that I definitely never thought of, but these guys did.

There’s no explanation of how it’s done, but speculators believe that they’ve isolated the magnetic compass inside the phone to operate the app.

Pretty cool example of what you can do when you have open source access to an OS.