Recent advances in telecommunication technology has led to the development of sensor networks. The sensor networks have become part of everyday lives for people. There are many applications that have been developed using these networks. There are many localization techniques available for use but the use of these applications depends on the requirements of the application. This study chooses the localization technique to be used in Child Tracking application. The localization is divided into two steps: signal measurement and position computation. Signal measurement step requires the sensors to measure some signal properties. And then the measurements of the signal are used in the computation of the location in the 2nd step, position computation. Two of the most widely used methods, triangulation and trilateration, are described in the study, as well as, few newer methods. In this study, fuzzy logic is proposed to be used as a technique for the localization of the target node. Fuzzy logic does not require the complex calculations that other methods do. The steps for the localization using fuzzy logic are described. © 2011 Academic Journals Inc.