badge

(noun) an emblem (a small piece of plastic or cloth or metal) that signifies your status (rank or membership or affiliation etc.). Example: "They checked everyone's badge before letting them in."

(noun) any feature that is regarded as a sign of status (a particular power or quality or rank). Example: "Wearing a tie was regarded as a badge of respectability."

(verb) put a badge on. Example: "The workers here must be badged."