Snakedoc wrote:Have any of you guys try the paper clip sidebar bypass on the Medeco m3 cylinders? I bought a biaxial so I doubt it would work but I intend to try the credit card technique since I'll have a working key with it.
The Medeco m3 is basically the same thing as Biaxial, but with the addition of a tiny sliding metal piece added inside. The slider in an m3 is just an extra little locking mechanism that prevents the lock from opening if an unauthorized fake key is used, such as the credit card trick shown in the Open in 30 Seconds book.
The paperclip doesn't actually bypass the sidebar; it just pushes in the slider so an improvised key will work on an m3 just like it would on a Biaxial. Or, once you've picked an m3, then you have to push in the slider with the tip of your pick or with a paperclip. Basically, the slider doesn't hinder picking or the use of an unauthorized key. It merely makes you take one extra really simple step that takes less than a second, pushing in the slider with a small piece of metal after you've defeated the lock's other security measures by other means. On it's own, just walking up to an m3 and pressing in the slider will not open it.
The slider doesn't really add any meaningful level of security. What it did for Medeco was give them a new utility patent, and it allow m3 locks to have more potential bittings available if you have a REALLY big masterkey system, like a university campus or something like that.