One way to open locks is to use a drill bit to drill right above the top of the keyway. The idea is to completely obliterate the "shear line" which is the line between the inner cylinder, called the core, and the outer part. That's why many high security locks have hardened steel pins or disks embedded at the top of the core.
cplcarlman t1_j3jgjli wrote
Reply to comment by Junmeng in How keys works. by -birdbirdbird-
One way to open locks is to use a drill bit to drill right above the top of the keyway. The idea is to completely obliterate the "shear line" which is the line between the inner cylinder, called the core, and the outer part. That's why many high security locks have hardened steel pins or disks embedded at the top of the core.