Physical security measures include lighting, locking, fences, and guards. Answer is physcial.
Security is the prevention of potential injury done by others by limiting their freedom to act. Beneficiaries of safety may include individuals and social groups, items and institutions, ecosystems, or any other thing or phenomenon exposed to unwelcome change. A security referent is the subject of a security strategy or language; for example, a reference could be a potential benefit of a security policy and system. Security referents might be individuals or social groups, items, institutions, habitats, or any other phenomena that is sensitive to unwanted change caused by the dynamics of its environment. The referent in issue may combine several referents, just as a national government is made up of numerous individual people.
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