Host Mesh Network is a peer-to-peer network used by the hosts to exchange data between them. Described as communication akin to "ants in a colony", it is used within the Delos parks as a means to help keep host narratives from interfering with each other. It can also be used to geolocate a specific host within the park by instructing hosts to query those around them and pass through that query as a virtual "mesh" to those hosts until a host or hosts near the targeted host returns the location.

The mesh network is used specifically for the latter purpose of geolocation by Bernard Lowe in order to locate the Peter Abernathy host who was reactivated form cold storage to acts as a data mule for Charlotte Hale after the host uprising begins with the start of the Journey Into Night narrative.

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