HS is a door lock design specially for the blind. The blind have restraint when using the product due to limited vision. However, when unlocking the door, this HS special door lock for the blind combines the cumbersome door opening steps from the original first scanning and then opening the door into one, combining the fingerprint unlocking scanner with the door handle to form the fingerprint door handle. In addition, the password unlocking is also hidden under the door handle to prevent the blind from being peeped by others when the password is unlocked and the door is opened. The inclination angle of the overall control panel of the door handle is in the blind area of human parallel sight. The safety coefficient of the blind is extremely high during use, thus protecting the blind's own interests. Traditional door lock problems: 1. Although the traditional door lock tradition has evolved very conveniently, it is only aimed at ordinary people. However, there is also a group of special people who are very complicated and unsafe to open the door for them, because blind people may spend several times as much time on traditional door opening for visual reasons as ordinary people, and if there is an accident, it may cause very serious consequences. 2. The password unlocking of the traditional door lock is located directly in front of the door lock and the cipher is 9-key unlocking, or more. Innovation points: 1. Optimize the way to open the door and unlock the door for the "special crowd" and ensure the personal safety of the "special crowd. 2. Braille four-key unlock key design four-key design, blind people are easy to find input, password number arrangement can be easy or difficult. 3. The overall unlocking control panel is in the blind area of human parallel sight to prevent the blind from leaking the password when unlocking. Functionally: with braille four-key unlock button and fingerprint password unlock. Modeling: slender, with straight lines as the main color, black as the main color. The unlocking panel at the door handle forms a 20 ° angle. The overall simple and beautiful appearance provides the greatest convenience for "special people.