>skeleton key This is the lockpicking equivalent of calling a cracker a hacker. Also, no lock can be 'unbumpable' just because it has a restricted blank, as b

>skeleton key This is the lockpicking equivalent of calling a cracker a hacker. Also, no lock can be 'unbumpable' just because it has a restricted blank, as by definition in those cases, if the blank can be obtained, the lock can be bumped. Unbumpable is generally reserved for locks that actually are, by using a mechanism other than pin tumblers (e.g. rotating discs (e.g. Abloy Protec), magnetic encoding on the key (e.g. EVVA MCS), sliders (e.g. EVVA 3KS), or driverless pins (e.g. BiLock)). High security locks have for a few years been incorporating moving/active elements into keys to avoid duplication, both now from 3D printing, but also originally from casting a copy of the key. As it is, keys witout those can be directly duplicated rather than even needing to bother with a bump key (unless you wanted to open more locks than the key used to make the copy can access).