North Carolina Locksmith Practice Exam

What is a listing of all key combinations used within a system called?

1. Bitting List

2. Key Directory

3. Lock Log

4. Code Register

The correct answer is: Bitting List

A listing of all key combinations used within a system is referred to as a bitting list. This terminology originates from the specifics of how each key is cut or configured. The bitting of a key refers to the varying depths and placements of cuts along its blade, which correspond to the internal pins of the lock it operates. The bitting list serves as a crucial resource for locksmiths and security personnel because it allows them to understand which key corresponds to which lock combination, facilitating key duplication or system management. While other terms like "key directory," "lock log," and "code register" may relate to key management or locksmithing practices, they do not specifically describe a complete listing of all the key combinations as effectively as the bitting list does. A key directory might reference a broader database of keys in use, often including relevant data about the locks as well. Lock logs are typically records of activity related to locks, such as access times, and a code register can refer to a catalog of codes used for locks without emphasizing the key combinations. Thus, the term "bitting list" most accurately captures the essence of a comprehensive record of key combinations.