The Smart Cube is Bluetooth smart lock that you can place inside of cabinets, closets or other doors you don’t want certain people to enter. The doors can then be unlocked trough an app on your smartphone manually, or automatically by sensing your approach trough you phone. You can assign each cube when to open. So you can keep your kids away from your medicine cabinet or your cleaning closet. It also alerts you when the cube is opened when it’s not supposed to.  To get more info check here