Which security approach defines a virtual perimeter around a geographic area and triggers actions when devices cross it?

Which security approach defines a virtual perimeter around a geographic area and triggers actions when devices cross it?

• A. Geo-blocking
• B. Geofencing
• C. Location-based access
• D. Geodetic fencing

Answer: (B)

Geofencing creates a virtual boundary around a real geographic area and triggers predefined actions when a device or person crosses that boundary. This approach relies on location data (GPS, Wi‑Fi, cell signals) to monitor position, and when the boundary is crossed, security policies can automatically kick in—such as restricting access, sending alerts, or enforcing a specific workflow. Geo-blocking, by contrast, is about blocking access to content or services based on location, but it doesn’t establish a dynamic perimeter that continuously monitors movement and triggers actions. Location-based access uses a location condition to grant or deny access at the moment, rather than enforcing ongoing boundary-based actions as motion occurs. Geodetic fencing isn’t a standard term in security practice, so it isn’t the established concept here.

Geofencing creates a virtual boundary around a real geographic area and triggers predefined actions when a device or person crosses that boundary. This approach relies on location data (GPS, Wi‑Fi, cell signals) to monitor position, and when the boundary is crossed, security policies can automatically kick in—such as restricting access, sending alerts, or enforcing a specific workflow.

Geo-blocking, by contrast, is about blocking access to content or services based on location, but it doesn’t establish a dynamic perimeter that continuously monitors movement and triggers actions. Location-based access uses a location condition to grant or deny access at the moment, rather than enforcing ongoing boundary-based actions as motion occurs. Geodetic fencing isn’t a standard term in security practice, so it isn’t the established concept here.