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Access Control mechanisms are nowadays mandatory to guarantee a minimum level of security in physical or logical environments. Different attributes can be used to grant access to users. In critical infrastructures individual position of users and devices is a clear alternative or complement. GeoRBAC is an extension of the Role Based Access Control (RBAC) mechanism that considers the position as another condition when performing access control decisions. In this paper we propose a real implementation and deployment of a GeoRBAC system integrated in the ICT infrastructure of a port, using OGC Sensor Web Enablement (SWE) set of standards to allow geolocation information interoperability.