Which is NOT a duty of an individual identified as a locksmith?

The role of a locksmith encompasses a variety of responsibilities primarily related to the installation and maintenance of locks and security systems. While it is important for locksmiths to manage their businesses effectively, the statement that a locksmith is "only managing security services" misrepresents the multi-faceted nature of the profession.

Locksmiths are trained to install locks, advertise their services to attract clients, and service mechanical security devices, which are all integral parts of their job. The focus on only managing security services ignores the essential hands-on technical skills required for the profession. Therefore, this option is not a true reflection of a locksmith's duties, as it excludes the practical applications and responsibilities they fulfill in their role.