A keyed padlock is a type of locking device that uses a key to open and close it. It typically consists of a metal body, a shackle that can be opened and closed, and a locking mechanism inside. When the correct key is inserted into the lock, it aligns the internal pins, allowing the shackle to be released. These padlocks are commonly used for securing gates, lockers, and storage units. They come in various sizes and designs, providing different levels of security. Keyed padlocks are often preferred for their simplicity and reliability compared to combination locks or electronic locks.