rich, ruined or simply ignored?

[Lock Jock]

Even the best most new fancy expensive centrally monitored access control system is only as secure or insecure as the keyed override cylinders

The Achilles heel.

if you are using split pin cylinders,

I'm not.

So would you care to explain how you can implement a master keying scheme on your lock if it does not operate like any known design, meaning no discs, split pins, positional progression, etc...

I'd be glad to have you guys pick apart my scheme, as soon as one of two things occur:
1. I get a patent on it.
2. I abandon plans to seek a patent on it. Just because I can do it, doesn't mean I should do it (i.e., unprofitable). Well, I could build the final revision just for my personal enjoyment, but that's a lot of custom work and I'd probably have to hire a machini$t or two (the unprofitable venture got even worse; it turned into a sizeable loss).

I'm not near condition 1. I'm also not quite at condition 2 yet, although I will admit I'm discouraged by some of the EVVA designs, for example, particularly the MCS, especially when outfitted with the Combi Key. If it can properly operate around high magnetic fields as well, that thing is just about as secure and flexible as it gets.

It sounds more like you have a lock which can not be operated by a key at this point than anything else...

Since it's 100% mechanical (for now), there must necessarily be some form of physical interaction with a key, and so there is.

[cledry]

LOL... Even the best most new fancy expensive centrally monitored access control system is only as secure or insecure as the keyed override cylinders that most AHJ's insist are installed so that the doors can still be opened during/after a power or communications system failure so that no lives are placed in danger without resorting to destructive means...



~~ Evan

This is why it is also good to have the audit trail in the key. Before Medeco we used the Videx system for this. Power goes out the system still maintains key control, audit trail, timed access, limited access.

[Lock Jock]

The Protec, for example, is inherently bump proof, but it can and will eventually be "picked" (one Protecoder coming up).

er, such as this: http://blackbag.nl/wp-content/uploads/2 ... decode.avi

[Lock Jock]

Also, as to master keying, there remains one problem with my design -- a big one.
The key can be too easily duplicated if stolen or "borrowed" for a brief period.
All the locks under that master's control -- even top level, if that's the one stolen -- would be compromised.

Although I've made it quite easy to configure the lock w/o calling in a pro -- and thus block the compromised key -- security of the system still depends upon the key owner realizing his key was not in his possession.

Thus, absolute vigilance is required of the key owner to keep it secure at all times.
Since that isn't likely in the real world, this is a major flaw which will need to be remedied.