Meet the OKIDOKEYS: a smart lock system that lets you lock and unlock your home door with a smartphone. The system uses highly secure encryption to keep you safe (including AES 256-bit and 3D Secure login). It has a small footprint and puts you in control. You can easily create temporary keys to share with your housekeeper or a guest. Smart keys are supported, which makes the system more convenient to use.
OKIDOKEYS offers 6 opening rules and a built-in alarm that notifies you when someone is trying to force his/her way through your door. It works with most doors and locks. All you need is a screwdriver to get started. You can get one for as low as $179.