Three dimensional space surrounding equipment that processes classified and/or sensitive information within which TEMPEST exploitation is not considered practical or where legal authority to identify and remove a potential TEMPEST exploitation exists. Synonymous with zone of control. Source: CNSSAM TEMPEST/01-13 (adapted)
What is inspectable space?
The term Inspectable Space refers to a physical area around equipment, cabling, or components that must remain accessible or visible enough for inspection, examination, maintenance, or security verification. It gives election, security, legal, or technical readers a specific label for the concept rather than a broader everyday meaning.
Why is inspectable space required around secure equipment?
Understanding Inspectable Space matters because the concept can affect security, reliability, auditability, or trusted operation. In this glossary context, it refers to a physical area around equipment, cabling, or components that must remain accessible or visible enough for inspection, examination, maintenance, or security verification.
How does inspectable space support physical security?
In practice, Inspectable Space is applied to the technical or security purpose captured by its definition: a physical area around equipment, cabling, or components that must remain accessible or visible enough for inspection, examination, maintenance, or security verification. Organizations combine that function with documented procedures, authorized access, testing, monitoring, and controls appropriate to the system.
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Three dimensional space surrounding equipment that processes classified and/or sensitive information within which TEMPEST exploitation is not considered practical or where legal authority to identify and remove a potential TEMPEST exploitation exists. Synonymous with zone of control. Source: CNSSAM TEMPEST/01-13 (adapted)
Cite this term
Election Security Glossary. (2026). Inspectable Space. In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/inspectable-space
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High consensus
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