The device installed on the door and window that has the function of fastening after opening and closing is called a lock. Locks are used to lock the door or window after being opened, which can prevent the intrusion of unauthorized personnel and protect the security of the home. Locks come in many different shapes and sizes, and are divided into many types according to their uses, materials, and structures. In addition, locks are also an important component of our daily lives, which can help us protect the security of our homes.