The wear on this lock gives us some clues that could jeopardize the access control to this space. Assuming the code has four digits, with at least one #3 and at least one #4, and no #1’s, #2’s, or #5’s, how many possible codes would it take to find the right one to open this door? For example, 3334, 3444, 3344…
Choose your access codes – and your door hardware – wisely, or the security of your facility could be compromised.
Thank you to Bill Dorner of Allegion for today’s Fixed-it Friday photo!
You need to login or register to bookmark/favorite this content.
I’m super prepared to be wrong, but I feel like there could be five possibilities…
code one – “3”
code two – “4”
code three “3-4”
code four “4-3”
code give “3 & 4 simultaneously”
(the only thing I’m not 100% on is whether codes three and four are seen as distinct on a Simplex 5000 series)
I agree with this. I forgot about the single digit options. 5 combinations seems right to me. 🙂
so you think i was correct? neat! 😀
Nice one but the Kaba 5000 model can only use number buttons once so I’d say there are three possible combinations.
3+4+ENTER – hit button simultaneous
34+ENTER
43+ENTER
This teaser highlights the fundamental flaw in code access locks. They do not provide real access control. They only provide a false sense of security. A badge can be deactivated and mechanical keys can be restricted but there is no way to restrict or control code combinations. Even if you change it multiple times a day, you cannot prevent people from sharing the codes. You cannot prevent covert watching someone enter the combination from a distance and using the code later. It seems like one step above using a passage lock, although I would contend it’s worse. No one looks at a passage lock and feels a sense of security. A card reader with keyed lock is a true lock.
Either lock the door or leave it unlocked. Pick one.
16 , four digit combinations, using two numbers
That looks like the push combo, on my old exterior office. The push button had been there for over 20 years.
It might be worth mentioning that magnets have become available in in this century which are strong enough to easily defeat older Kaba locks, but a Kaba has designed a retrofit kit to fix the problem.