WSN/RFID Architecture For Children’s Monitoring Giovanni Pau, Gianfranco Scatà Real-Time Systems and Networks Laboratory Kore University of Enna giovanni.pau@unikore.it; gianfranco.scata@unikore.it Abstract The RFID Technology (Radio Frequency Identification) has been designed to identify objects, animals and even people automatically using the radio frequencies. It is currently considered as the main methodology for distance detection of goods and any other resources, through the airwaves. The areas of possible use of this innovative technology are several: Medical, transportation, security, industrial automation, to name few. We talk about identification because this mechanism allows you to assign a unique identity to any element in which an RFID tag is applied while the term automated refers to the fact that this is done without the help of man. RFID technology is therefore a method to store and retrieve data from remote using smart labels known as RFID tag. Adhesive and often small, an RFID tag consists of an antenna that allows reception and transmission of information within the network to which it reports. In this paper we show an approach based on RFID technology for tracking children in shopping centers in order to quickly find the location of missing children within the area monitored. An application of this kind allows the monitoring of crowded places with highest precision in which risk factors exponentially increase. I. INTRODUCTION One of the main benefits of using RFID is to provide access to real-time information improving the efficiency and safety, significantly reducing management costs[1][2]. The application of RFID tags on valuable goods allows, for example, discouraging theft, forgery and to quickly recognize objects placed on smart shelves. The application fields, as mentioned, are many and they are growing every day more and more to affect many aspects of our daily lives: buildings, postal services, tracking of agricultural / food and baggage at airports, automated payments or used in paper documents to automate the management of archives and offices[2][3]. For example, The European Central Bank is planning to put RFID tags on the banknotes to deter counterfeiting of the same[4]. In addition, RFID technology is highly scalable, that’s why you can think of a future (very close) where this technology can be fully integrated to a Wireless Sensor Network[2][5] in order to allow consumers to have real-time information about objects origin, their characteristics and their position. The components of an RFID system are four[6]:  The tag (or transponder) that is electronically programmed  The reader (or Scanner)  The Server (Host Computer) The entire architecture is shown in Figure 1. Figure 1: RFID System Scheme The main task of an RFID system is to transfer data to the transponder and to recover data on time and in an appropriate way in order to satisfy particular application needs. The data contained within a tag may provide all the information required in relation to a piece in production in a factory automation environment, to goods in transit, to the identity of a vehicle, an animal or person. These data can be inserted through an appropriate electronic programming tool of the tag itself. In addition to tag you need a device which can read the tags and other systems to transfer these data to an information management equipment (host computer). The aim of this paper is to present an architecture RFID-based in order to monitor children in shopping centers. This mechanism for person tracking,