Any smartphone can use Lockitron through its intuitive two-button app. With Lockitron you can instantly share access with your family and friends.
Lockitron lets you see if your door is locked when you're gone. It will send a notification when your child unlocks the door using their phone or key. A phone (runs as an app on iOS and Android).
Check out the video below how it works.
It’s still not yet out but reservation is ongoing for $149 a pop.
Source : Lockitron