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  2. Perimeter intrusion detection - Wikipedia

    en.wikipedia.org/wiki/Perimeter_intrusion_detection

    A fence-mounted perimeter intrusion detection system installed on a chain link fence. A perimeter intrusion detection system ( PIDS ) is a device or sensor that detects the presence of an intruder attempting to breach the physical perimeter of a property, building, or other secured area.

  3. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary ( theft ) or property damage , as well as against intruders.

  4. Perimeter surveillance radar - Wikipedia

    en.wikipedia.org/wiki/Perimeter_Surveillance_Radar

    Perimeter surveillance radar (PSR) is a class of radar sensors that monitor activity surrounding or on critical infrastructure areas such as airports, [1] seaports, military installations, national borders, refineries and other critical industry and the like. Such radars are characterized by their ability to detect movement at ground level of ...

  5. Perimeter security - Wikipedia

    en.wikipedia.org/wiki/Perimeter_security

    Both natural and manmade barriers can serve as perimeter security. [1] Governments use perimeter security not only for the safety of their citizens, but to control the flow of commerce and immigration, as well as to protect vital infrastructure from attackers. Property owners and organizations of all sizes use various man-made technology to ...

  6. Perimeter fence - Wikipedia

    en.wikipedia.org/wiki/Perimeter_fence

    Vertical bar fencing has been the most popular form of perimeter security fence since the 1980s. Since the 2000s, welded wire mesh and acoustic barriers have also become popular types of perimeter fence around the world. Vertical bar, acoustic barriers and welded mesh are used in commercial projects and landmarks, [1] and transport hubs. [2]

  7. 30 Bodyguards Reveal What It’s Like Protecting The Rich And ...

    www.aol.com/people-wanted-know-working-bodyguard...

    Image credits: Brad Robinson #6. I specialize in executive and personal protection, and over the years I have guarded many well known clients. Celebrities are always some of the most ‘difficult ...