A trigger lock is a safety device designed to prevent the accidental discharge of a firearm. It works by blocking the trigger mechanism, ensuring that the gun cannot be fired until the lock is removed. Trigger locks are commonly used to secure firearms when they are not in use, helping to promote responsible gun ownership and reduce the risk of accidents, especially in homes with children. These locks can be made from various materials, such as metal or plastic, and are often key-operated or combination-based. Many states have laws requiring the use of trigger locks or other safety devices, emphasizing the importance of securing firearms to prevent unauthorized access and potential misuse.