Lock picking's the skill of unlocking a lock by analyzing and manipulating the components of the lock device, without the original key. Although lock picking can be associated with criminal intent, it's an essential skill for a locksmith. Lock picking's the ideal way of opening a lock without the correct key, while not damaging the lock, allowing it to be rekeyed for later use, which's especially important with antique locks that'd be impossible to replace if destructive entry methods are used.… (More on Lock-picking)