Wisconsin Administrative Code
Department of Safety and Professional Services
SPS 1-299 - Professional Services
SPS 30-49 - Private Detectives
Chapter SPS 33 - Practice Requirements
Section SPS 33.03 - Identification tags

A private detective agency shall furnish all employees acting as private security personnel with an identification or name tag which shall at a minimum contain the person's name, number or other information which clearly identifies the person and the agency, or the person and the entity contracting with the agency. A private detective agency shall ensure that all employees who act as private security personnel wear identification or name tags which are visible to the public at all times and comply with this rule.