5 ms·
3-D Printed Skeleton Keys Can Pick High-Security Locks in Seconds
- deleted 12y ago[deleted]
- kazinator 12y agoSome user re-keyable locks are supposedly resistant to bump attacks, like Schage's SecureKey. (What I use.) Re-keyable locks are more expensive, but worth it. If you do a patent search about rekeyable locks, you see that they are fairly recent. In 1967, a patent was granted on a lock that flips permanently from one combination to another. During construction, a builder uses the builder's key to access the property. This key stops working as soon as the owner uses the owner key to open the lock for the first time. There is patent activity in this area as recently as 2009. This site has some discussion of the Schlage SecureKey internals: http://www.lockwiki.com/index.php/Schlage_SecureKey http://www.lockwiki.com/index.php/Schlage_SecureKey SecureKey is programmed by inserting the original Reset Key into the lock and turning into a special position (a 45 degree angle, IIRC). You can then remove the Reset Key, and insert the new key, which can have an arbitrary code. You turn that to the original position, and the lock is programmed. Internally, it looks like the lock "quantizes" the height of each cut to one of ten positions to memorize the new pattern; but it's all mechanical. Quite neat!
- aidenn0 12y agoSchlage secureky is far less bump resistant than some other slider designs. I've also seen pin-locks that incorporate a single disc-detainer to make bumping harder (a single disc-detainer likely isn't enough to actually prevent bumping, since you could probably just get N bump keys where N is the number of set positions for the disc detainer).