![..//assets/img/kb/masterCyberkey.png](..//assets/img/kb/masterCyberkey.png)
A CyberKey may be granted master access to all locks which use a particular access code. When a CyberKey is designated as a master key, it can open any lock programmed with that access code without having a schedule set in the Access Matrix.
By default a master key has full, 24/7 access to all locks using the assigned access code. Master key access can be further restricted to operate only during the time frames of a selected schedule. Access for each individual lock can also be restricted to a specified schedule, or its access privilege's can be fully removed by assigning the "Block Access" schedule. Master keys always obey the rules of a schedule before they attempt to open any lock.
Administrators may choose to use master keys because:
- Master keys are easier to create and manage when a key is to open certain groups or all CyberLocks in the system.
- New locks are being added to the system that the key must open but it is inconvenient to add the additional permissions and update the key.
- The number of locks a CyberKey must open exceeds 3300.
Related Topics:
Subsystem Master Keys
Grand Master Keys
Reset Keys