by straightpick » 29 Aug 2008 21:37
I have created dozens of masterkey systems involving hundreds of locks and I CRINGE when I hear maison keying. I know it is done, but it is MUCH more secure to use a seperate key for the main entrance, preferably a keyway different than the apartment locks. The problem with maison keying is the more keys you have working the main entrance, the weaker the security is.