1. you have an android phone, you should know who "google" is and what they do :P
2. what I THINK you are referring to is that people will just set they're droid into an ihome dock of some sort, and the multimedia screen with come up
the motorola droid has magnetic sensors in the back. when a northern magnetic pull happens on it, it goes into the multimedia dock home. when it's southern, it goes into the navigation dock home (or visa versa, can't remember)
most of the ihome's these days use magnets in the dock to help keep the ipod or whatever you plug into it stable. the magnet apparently triggers the multimedia home, which is actually quite neat and handy.
3. if that isn't what you're talking about, your probably asking if there is a way to hook an android phone up to an ihome dock. well, most ihome docks actually have aux ports, or just a built in wire that will plug into any standard headphone jack. if it doesn't, there's really only a few ways to mod an ihome like that to play from a headphone jack, all which would require soldering skills and for you to actually open up the ihome.