What security mechanism would best minimize unauthorized viewing of a computer screen at a healthcare facility?

Automatic logoff controls are particularly effective for minimizing unauthorized viewing of a computer screen in a healthcare facility. This security mechanism entails setting a system to automatically log users out after a period of inactivity. By doing so, it prevents unauthorized individuals from accessing sensitive data that may be visible on the screen if the user steps away temporarily.

In a healthcare environment where patient information and sensitive data are frequently accessed, the potential for unauthorized viewing due to unattended screens is significant. Automatic logoff mitigates this risk, ensuring that information remains protected even when users forget to log off manually.

While access controls protect against unauthorized access to systems and data through permissions and user authentication, they do not specifically address the issue of an unattended screen. Audit controls monitor and track user activities, serving compliance and investigative purposes but do not prevent unauthorized viewing directly. Device and media controls relate to the management and protection of physical devices and data storage media rather than screen visibility. Therefore, automatic logoff is the most direct and effective mechanism to prevent unauthorized viewing in a healthcare setting.