North Carolina Locksmith Practice Exam

The primary function of a Change Key is to reset certain key or combination locks. In a locking system, change keys are specifically designed to work with locks that are set to a specific combination or are part of a master key system, allowing for the authorization of access to different areas or compartments without altering the entire system.

When a change key is used, it allows for the lock to be reset to a different key combination to maintain security while providing flexibility in key access. This is particularly useful in environments where personnel changes frequently occur or where different users require access to individual locks while ensuring that others remain secure.

In contrast, a change key does not operate all locks in a system nor does it act as a master key, which controls multiple locks in a hierarchy. It also does not function to reset all types of locks, as its utility is limited to specific keys within a defined locking mechanism.