This has been bugging me for some time now. The cell phone originated as a car phone, now with ALL of the add-ons they've come out with for cell phones (i.e. games, cameras, MP3's, address books, etc.) I am surprised that none of them have a garage door opening function. One time I had a rental car for a few days and I realized (as I pulled into the driveway) that I didn't take my door opener out of my car before I left it with the garage. I was thinking that they should build in a feature that allows you to synch a button on your cell to your garage - I always have my cell phone on me, so it seems like an obvious feature that has been overlooked.