A restricted key is a key that is tightly controlled by the door hardware manufacturer. They are not available on the open market and often require special equipment to duplicate, which means it’s nearly impossible to obtain a copy of a key from a hardware shop or a big-box store because those places will not have the key blank or the equipment needed to make the copy. Be careful not to confuse restricted keys with keys stamped with “Do Not Copy”. That stamp is meaningless and there is no lawful action that can be taken against those who make copies of these keys.
Have any of the following situations happened in you or your organization?
A key was lost
A key was stolen
A tenant fails to return a key