Which physical security control should be used to track visitors to a facility, with the level of detail depending on the facility's sensitivity?

Utilizing access logs as a physical security control is essential for tracking visitors to a facility, particularly when the level of detail can vary based on the sensitivity of that facility. Access logs provide a detailed account of who enters and exits the premises, allowing for monitoring of visitor traffic over time. This is especially important in environments that require stringent security measures, as it assists in maintaining accountability and traceability.

Access logs can capture various details such as the time of entry and exit, the identity of the visitor, and their purpose for being in the facility. This information can be critical in investigating any security incidents or unauthorized access, enabling security teams to respond appropriately. In more sensitive settings, access logs may also include additional details, such as the areas of the facility accessed or specific high-security zones visited.

While lighting, cameras, and hardening each contribute to a comprehensive security strategy, they serve different functions. Lighting improves visibility and deters unauthorized access, cameras allow for surveillance and monitoring, and hardening strengthens physical infrastructure against breaches. However, none of these options provide the systematic tracking and record-keeping capabilities that access logs do, making them the optimal choice for detailed visitor monitoring tailored to the facility's security requirements.