What is the purpose of a security guard's uniform?

The purpose of a security guard's uniform is primarily to identify them as authorized personnel in a given environment and to deter criminal activity. The presence of a uniform with identifiable markings signals to the public that the individual is a member of the security team, which can prevent potential criminal acts due to the visible deterrent effect. This visibility helps create a sense of safety among the public and can discourage unlawful behavior simply through the awareness that security is present.

While looking presentable is beneficial and distinguishing from other employees can help in a specific operational context, these factors are secondary to the primary functions of identification and deterrence. Keeping warm during shifts might be a practical reason in some circumstances, but it does not align with the fundamental purpose of a security guard's uniform in contributing to security and safety measures.