What is a master keyway?

What is the difference between a master key and a regular key?

Some locks are designed to work with two different keys. The change key will open only that specific lock, while the master key will open that lock and several others in a group.

How do you tell if a key is a master key?

"Master keys are identified with a simple test. You can test whether or not you have a Master key by watching the Security light as you insert your key into the ignition. If the Security light turns off immediately after insertion of the key, it is a Master key.

Can master key open any lock?

When lock rekeying into a master key system, two keys are created: Change key: This key can open the master lock, but only the master lock. It cannot be used inside any other locks you have. Master key: The master key can open all locks you have in your residential or commercial property.

What is the difference between a master key and a grand master key?

Grand Master Keying Systems In these systems, two or more groups of users can have keys that open their own doors as well as master keys that open all the other doors in their group. At a higher level, there is a “grand master” key that can be used to open all the doors in the building.