Keypad deadbolt is a special type of lock which does not require a key as it uses a numeric keypad. It only requires a unique password to lock and unlock the door. This type of lock is normally used in homes, offices and cars. Sometimes these locks also come with a remote control which sends signals to the lock to open or close, or with a key to override the lock mechanism.
A video included in this blog post can teach you more about keypad deadbolt. Through this video, you will also learn how to properly install this locking system.
You can watch the video below: