B. Badge reader: Badge readers are commonly used for physical access control. They require authorized individuals to present a valid badge or access card to gain entry to a building or specific areas within it.
E. Motion sensor: Motion sensors are used to detect movement in and around a building. They can trigger alarms, surveillance systems, or lighting based on detected motion, helping to deter unauthorized access or intruders.
Physical security has three important components: surveillance, access control, and testing. Each component of physical security needs the other to successfully protect a building
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