What term is used to define a non-entry/exit zone?

The term that defines a non-entry/exit zone is known as a "perimeter follower zone." This concept is relevant in the context of security and intrusion detection systems, where zones are established to manage and monitor access points within a secured area.

In many security implementations, zones are categorized based on their functionality and the flow of movement. A perimeter follower zone typically refers to the area surrounding the primary entry or exit points, ensuring that any movements within this space are closely monitored without being designated as a direct ingress or egress route. This zone is critical for detecting unauthorized access or suspicious activity while maintaining surveillance over areas that are not meant for direct entry or exit.

In contrast, other options relate specifically to zones that either allow or focus on monitoring entries and exits, which would not be applicable when discussing non-entry/exit spaces.