Monday, August 07, 2006

Do you think you have a secure lock for your house?

Well, you may need to think again.

This video, shows you how easily it can be for any ordinary person to open even some of the most difficult mechanical lock you can imagine. With bump keying, it doesn't matter if you have a $10 lock or a $100 lock, it can be opened.

Now you may think "this is great, what am I going to do now?" Well, there are ways to protect against it, and I will tell you some of them. Note, you will need to be quite mechanically inclined (especially in locks, I lockpick for fun sometimes ^_^) to understand these information.

First, you can add a third tumbler to your row of two (typical of most locks). This will cause the top one to be thrown instead of the one crossing the shear line. You can also put one or two of the smallest length pins in your already small pin line.

Another method is to add a top pin of different material, for example, you can put a lead pin and/or a magnesium pin into your 8 tumbler lock. When you bump the lock, the shear line will be clear at different intervals of time, reducing the chances of success.

Third, strengthen one or two springs. You can replace a couple of the springs in the lock w/ stronger ones or stretch your springs out a bit to make them push harder at their natural position.

Well, even though this is good information, I understand that not many of you will be able to understand it. However, know that bump keying still requires a good technical knowledge of the lock and actually having the bump key to use with that lock. So, it does not look so bad, yet. Maybe one day, you might be able to buy a lock which is 'bump-keying-proof"!



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