Anyone had good luck with H and V? For master keying. I ran the numbers. For Schlage, figuring a two step increment, you got fewer changes with five pin. But more changes with six pin.
And how do you deal with property managers who take the locks out to some random place and get the locks keyed to the MK and a couple random keys out of a shoe box?
I used H2V2 for a padlock master key system many years ago. Ran out of changes in a hurry.