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This newly designed door lock suggests the safer way of locking. Different by the existing door locks, It doesn’t need another place for door lock system. This is the way that doorknob itself be the door lock.
On the rear side of doorknob, There are 4 buttons. The buttons are ergonomically placed by the positions of your fingers and each button has small bump at the middle of it. These things help you can use the buttons easily even if it placed at the side hard to see. Above all, these rear side placed buttons help hiding the hand movements when you push the buttons. This is the natural and easy door lock system but also beef up security.
Seoul, South Korea