In this paper, we describe the implementation of applying and testing the ”Lightweight Target Tracking using Passive Traces algorithm” [1] on a FIRE wireless sensors testbed located in the Theoretical Computer Science/Sensors Lab in Geneva, Switzerland. We provide information about the hardware installation and configuration, the changes we did to the algorithm to adapt it to a real testbed as well as the tools we implemented to operate the network and receive feedback from the algorithm’s operation. Finally, we discuss the performance evaluation findings of our implementation.