High Quality Content by WIKIPEDIA articles! Physical security describes both measures that prevent or deter attackers from accessing a facility, resource, or information stored on physical media and guidance on how to design structures to resist various hostile acts. It can be as simple as a locked door or as elaborate as multiple layers of armed Security guards and Guardhouse placement. Physical security, by no means, is a modern phenomenon. Physical security, as a field, exists in order to deter persons from entering a physical facility. Thus, as long as the need to defend physical facilities has existed, a need to provide for their security has also been needed. Historical examples of physical security include city walls, moats, booby traps, etc.

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