Robert B. wrote: > I still think it's a good idea to have a double-check system like > the one I've described. A simple increment-on-use syncronized > counter would be acceptable, but far easier to bypass or work > around than a more complicated unpublished algorithm. In the end > it might not make the system any more secure against an initial > attack, but it would at least alert you if someone else had been / > is currently there, and that its time to change the lock to > resecure the system. Wouldn't it be easier to just buy a big dog, Robert? -Andrew === Andrew Warren -- aiw@cypress.com === Principal Design Engineer === Cypress Semiconductor Corporation === === Opinions expressed above do not === necessarily represent those of === Cypress Semiconductor Corporation -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body