Digital Forensics in Small Devices: RFID Tag Investigation

2.2.3.1 RFID Middleware
The responsibility of a middleware is to prepare the data collected from the
RFID readers in the RF subsystem for the AS that sustain business processes.
In addition, RFID middleware does the filtering of “duplicate, incomplete,
and erroneous information” receiving from RFID reader (Karygiannis et al.,
2007, pp. 2-15). Hence, the RM filtering is useful and important in an
environment where many RFID tags are in very close locations. After
filtering, the non-duplicated and accurate data will be instantly transported
to the AS by RFID middleware. The stored data in AS can easily be
retrieved later if it is needed.
To be brief, as shown in the Figure 2.13, the collected and filtered
real-time data from the RFID readers is sent to the backend Enterprise
Resource Planning (ERP) system by the RFID middleware (Bhargava, 2006,
cited in Karygiannis et al., 2007).
Figure 2.13: Information Functions of RFID Middleware Software (author)
2.2.3.2 Analytic Systems (AS)
AS typically consists of databases, data processing applications and Web
servers for processing of the information forwarded by RM according to the
instructions of the users and business requirements (Karygiannis et al.,
2007).
Data on tag is read by the readers.
Software extracts data from
readers. Data is then filtered
and aggregated.
The information is sent to ERP system.
RFID Tags
RFID Readers
RFID Software
Enterprise
System
In the AS of a RFID system, the customized business logic is
enclosed in order to support each business process. According to
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