While most of the proposed middleware solutions make
use of the SOA approach, some others have followed a different
way, especially if developed for a specific scenario
(target application, specific set of objects or limited geographical
scenario). One remarkable project is the Fosstrak
one, which is specifically focused on the management of
RFID related applications [34]. It is an open source RFID
infrastructure that implements the interfaces defined in
the EPC Network specifications. It provides the following
services related to RFID management: data dissemination,
data aggregation, data filtering, writing to a tag, trigger
RFID reader from external sensors, fault and configuration
management, data interpretation, sharing of RFID triggered
business events, lookup and directory service, tag identifier
management, and privacy [35]. All these functions are
made available to the application layer to ease the deployment
of RFID-related services. In [36], the authors present
another RFID-related middleware which relies on three
functionalities: the tag, the place, and the scenic managers.
The first allows the user to associate each tag to an object;
the second supports creating and editing location information
associated to RFID antennas; the third one is used to
combine the events collected by the antennas and the
developed related applications.