A: Restricted key systems bestow all managerial powers involved with a lock or a system of locks all onto one or more specific people. This person (or peoples) is the only one who can decide whether to duplicate a key or issue a key to someone else—as well as have any designated locks repaired, replaced, rekeyed, or be serviced in general. In addition, this restricted key system enables someone to have total control over the keys and locks in a particular facility.
A: Oftentimes, rim cylinders are somewhat less resilient than other, more complex, stronger cylinder. However, it is very difficult for many locks function after years of service. Therefore, we recommend changing the locks if it malfunction.