How do you setup new residential key codes

[zeke79]

If you are setting up residential key codes for a new install on say a restricted keyway such as primus how are you keeping track of all the bittings and not crossing over into your master key systems or repeating bittings? I have been playing with this a bit with some master key software by setting up a large master key chart that will serve as a non master key bitting chart and the locks will just not be master pinned. This however does not guarantee that other master systems on the same sidebar do not end up with one key ghosting a residential key or vise versa. Or worse yet, a master key or higher level key ghosting.

How do you pros handle this? Any help would be appreciated.

[keysman]

Zeke
the easiest and a very safe way is to NEVER use a zero or a 1 in certain spaces ( say 3)for the master system ,and always use at least one zero or a one in one of those spaces.
You could also go the other way and never use a 8 or 9 in the master and always use an 8 or 9 in the residential key... probably litttle safer as the residential key can't be cut down to fit the master system.

This shouldn't pose a problem for changes as you have a million possible changes using a 6 pin 10 depth key ( no accounting for MACs)
If you eliminated 2 cuts in 3 positions you would still have 500K + changes available for the master system.
You would have 200K Changes for the residential if you used only 2 different cuts in any 1 position.


That should hold you for a while

[zeke79]

Thanks Keysman! I now have some food for thought .

[devildog]

There isn't software that will handle this? I just checked HPC's site and this looks like it's designed for exactly what you're asking for: http://www.hpcworld.com/Software/w_kt35.htm

[zeke79]

Key trail is geared towards tracking keys that are issued and the number of keys issued to sites etc as far as I know.

Basically what I am after is a way to prevent accidently reusing a bitting in two systems.

Lets say I have I have systems 1 & 2.

System 1 has key bittings
31571
33571
31591
33171

System 2 has bittings

51571
53571
51591
53171

Of course there would be many many more change keys in a system but these numbers are generated by the master key software for you in each system. I am wanting to know how to prevent same bitting results in multiple systems...

[devildog]

It seems like you ought to be able to set the software to alert you to cross-over between any two systems of your choosing.

[linty]

should be able to, but the software i use definitely does not have that feature, and it's up to date.

we use a large printed system for our non-masters, with progressions of 2 between cuts. for master systems we switch at least a few odds with evens, and vice versa. so if our single keys are eeoeoe (even or odd) as long as the master systems are mpt eeoeoe and with stick with progressions of 2 we know we are safe.

however you still have to watch for crossover between your master systems.

[maxxed]

A simple solution may be to vary the pin sequence say on a master system go odd even odd even pin depths then on a residential go even odd pin depths.
To come up with random number sequences I look in the phone book and just drop digits that exceed the macs, of course I stroke out sequences already used. I recomend useing only the last 4 digits to avoid certain sequences showing up too frequently

[btierney]

I admit I don't know much about master keying, but is there not like a free online site to generate these codes? If there isn't, I might be interested in putting something together. I'll have to do a little research first. I don't want to reinvent the wheel, though.

What do you think?

-Brian