No person shall employ or engage a locksmith to provide services to the public for a fee that are required to be performed by a licensed locksmith unless the person who employs or engages such locksmith displays in his place of business in a conspicuous place where it can be readily seen by anyone entering the premises the name and license number of every locksmith such person currently employs or engages to provide such services. Such business shall also retain at its business premises and at all times have available for inspection a copy of the currently valid license of every such locksmith.