We've been using the "lock & unlock your door with an app on your phone"
solution from Lockitron for two years now. In fact, here's a blog I wrote in
2010
[http://danielodio.com/lock-unlock-your-door-using-your-iphone-with-lockitron]
with a video showing how it works. As early adopters, Paul, one of the Lockitron
founders,
