Final answer:
A security guard is required by the Private Security and Investigative Services Act, 2005 to carry a security license while on duty. Other items like notebooks or restraints are not mandated by the act but may be provided by employers.
Step-by-step explanation:
Under the Private Security and Investigative Services Act, 2005, a security guard is legally required to carry a security license while on duty. This legislation mandates that all security guards must have their license with them at all times while working to ensure that they are identified easily and to confirm that they have the legal authority to carry out their security duties. Items such as a notebook, handcuffs, and baton are not legally required by the act; however, they may be provided by the employer as part of the security guard's equipment based on the job requirements and the employer's policies.