Q-SL2 eliminates the stress of forgetting to lock a door or losing the key. Doors can be locked and unlocked via a smartphone app, and the hands-free function can even detect the smartphone’s position to unlock doors simply by standing next to them. The aim of the design was for the Q-SL2 to have a subdued presence that blends into residential spaces. Its symmetrical geometric form is inconspicuous when positioned either vertically or horizontally. Metallic materials are incorporated into the knob portion, offering greater durability plus a sense of security and sturdiness as a lock.