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You must have experienced the frustration when your door locked yourself out of your house without key. Hence, we draw inspiration from the door locking system of hotel rooms. It is a smart and convenient reminder for everyone leaving the room or house. The room key built on relationship of switching off electricity and the act of leaving room. Key house mimics correlation and built a door handle as the key holder. It is based on action that when you are leaving house, you will use the door handle to open the door. By placing it together, it serves as reminder please bring your keys.
National University of Singapore