What must a security guard carry while on duty?

A security guard is required to carry a valid security guard license or identification while on duty because this serves as proof of their authorization to perform security tasks. The license demonstrates that the guard has completed the necessary training and meets the legal requirements to operate in that capacity. This identification not only helps establish the guard's legitimacy to the public and property owners but also ensures compliance with state regulations governing security personnel. Being able to present a valid license can enhance the professionalism of a security guard and instill confidence in those they are protecting, as it assures them that the individual is qualified for their role.

The other items may be useful in various situations, but they do not carry the same legal necessity as possessing a valid identification or license. For instance, a first aid kit is essential for handling medical emergencies but is not mandated for a security guard's role. Similarly, a radio can be important for communication, and maps are helpful for navigation, but none of these items carry the legal or regulatory weight of the identification that certifies the guard's qualifications to serve.