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The security problem with a key is that anyone who gets their hands on it can get in. The problem with a combination is that people with enough time can twist it around at random to find their way in. A keybination lock combines both technologies to stop either method of attack from working.
The
user inserts a key into the knob, and then uses the key to turn the knob to put in the combination. Thus, you need a key to try a combination, and someone who has stolen the key will still need a combination.
It works quite simply, by attaching a typical lock's pen-tumbler cylinder into the knob for a combination type lock. A little locksmithery could easily produce such a device.
Once installed, you can have full peace of mind, knowing that nobody will get into your house. Let's see how it works. Uh, what was my combination again? Oh, darn, where are my keys? See? Now nobody's getting in! Spare some change? I don't have a house anymore, well I do, but I'll need about a thousand bucks to hire a good enough locksmith to let me back in.
"key combination lock"
http://www.freepate...ne.com/4616492.html
[2 fries shy of a happy meal, Jun 29 2007]
[link]
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Cool.
Here's a link to something very similar but, (if I'm reading it right), uses the inserted key to turn the combination lock. (+) |
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So your logic goes:
-- key-locks are defeated by attackers with a stolen key
-- combination-locks are defeated by attackers with plenty of time
However, a key&combination-lock has the strengths and weaknesses of both and can be defeated by an attacker with a stolen key and plenty of time. Useful to bear in mind when thinking about security systems is that adding complexity often does not increase security. |
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Good point well made [hippo] - plus, a more intricate mechanism is likely to be more easily breakable/drillable than a simple one e.g. a massive iron bar. |
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…or the window you left open this
morning before you went to work. |
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Yup, [Ian] is burgling (US: burglarizing) your house right now. |
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Arse - I knew I should have password protected my laptop - and now Ian iz in my houze stealing all my stuff - and my bandwithz. |
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I think you're not [zen_tom] - you're [Ian] posting from [zen]'s stolen laptop. |
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I can't say burgling? I love to say burgling! |
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Only if you transfer surplus zeds (US: zees) to another word - e.g. "garglarize" instead of "gargle". |
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Too much trouble - I'll just break in through the window. |
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I saw something like this in a Jackie Chan movie, Operation Condor. |
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Good movie. Only in that one, if you got the combination wrong loads of machine guns poked out the wall and ripped you to shreds. |
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Hello, 911? I think there's a burglarizer in my house... |
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\\ locksmithery \\ I love locksmithery. I want a locksmithery shop to smith my locks. |
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Cancel that. Turns out he was only a simple burglarist... |
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Yeah, it's the complicated burglarists you have to watch out for. |
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Yay! It's a burgle/burglarize debate! Thats one I'd like to see cleared up some day. I'll have to vote for the Americans on this one, because burgle is easy to misstype into something a spellchecker recognizes as bugle. I'd hate to have someone trumpet my home. |
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Don't feel bad though, because I stick with Britain on the color grey. Until I started spelling it that way, I don't know how many alternate-lifestyle colored skies and alternate-lifestyle colored suits my spellchecker had written into vaious documents of mine. |
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