Security barriers are physical structures designed to protect people, property, and sensitive areas from unauthorized access or potential threats. These barriers can include fences, walls, gates, and bollards, which are often used in places like airports, government buildings, and military installations to enhance safety and control entry points. In addition to physical barriers, security systems may incorporate technology such as surveillance cameras and alarms to monitor and respond to breaches. The effectiveness of security barriers relies on proper installation and maintenance, ensuring they serve their purpose in deterring intruders and safeguarding valuable assets.