A designated signage element communicates restricted access, permitting passage solely to authorized personnel. For example, a barrier gate or door might bear such a visual indicator. This controlled access point typically prevents entry to visitors, customers, or other unauthorized individuals.
These access restrictions improve security by preventing unauthorized individuals from entering sensitive areas, protecting confidential information, valuable assets, and employee safety. Historically, workplace safety regulations and the need to protect proprietary processes have driven the adoption of restricted access areas. Controlling access also facilitates better management and oversight of specific work zones.