Starting at $99, Bolt by Lockitron lets you lock or unlock your door simply by walking up to it with a phone in your pocket.
Any smartphone can use Bolt through its intuitive two-button app. Sense allows you to unlock your door automatically when you return home.
With Bolt you can instantly share access with your family and friends. With Bridge, Bolt 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.