Becky and I generally rely on the garage door opener to get in and out of the house. (We have a door into the house through the garage.) That also lets us give people the code to the garage door keypad if we need to let someone else have access. The Kwikset Kevo is a similar option, without the keypad. The Kevo lets you make a bluetooth connection to your smart phone to unlock the door when you approach. If you don’t have a smart phone there is a key fob option. If you need to let someone in, you can give them a temporary code for access. It’s battery operated, but you can see that there is a key backup.
The control is handled by the a smart phone app. There is an iPhone app for this, but currently Android doesn’t support the Bluetooth LE necessary… but it should be coming.
I like where this is going, but I don’t think this is there yet. The fact that it isn’t supported by Android is an issue when you want to give the code to the plumber or your brother-in-law to get in. Also, I see this needing to tie into other Smart House features rather than being a stand-alone system. It’s a great start though.