What type of security measure can deter potential intruders by creating barriers?

Creating physical barriers is a fundamental approach to securing an area and deterring potential intruders. Physical barriers such as fences or walls serve the primary purpose of restricting access to a property and making it more difficult for unauthorized individuals to enter. These barriers can be designed to be tall or difficult to climb over, reinforced with barbed wire, or made of materials that are hard to breach, thus serving as a strong first line of defense.

While fire alarms, surveillance cameras, and access control software play significant roles in a comprehensive security strategy, they do not physically prevent an intruder from entering a space. Fire alarms are crucial for detecting smoke or fire hazards, surveillance cameras monitor activity and can provide evidence in the event of a security breach, and access control software manages who can enter a facility based on credentials. However, none of these options create tangible barriers that physically stop unauthorized individuals from entering. Hence, the option focusing on physical barriers is the most effective measure for deterring potential intruders by creating obstacles they would have to overcome to gain entry.