Determining the Position and Orientation of Multi-Tagged Objects Using RFID Technology Steve Hinske Institute for Pervasive Computing Department of Computer Science ETH Zurich 8092 Zurich, Switzerland steve.hinske@inf.ethz.ch The idea of smart shelves or tables equipped with RFID technology has been around for some time now. There already are commercial products available, especially for retailing. All presented solutions, however, are designed to only identify objects currently in range. While this may be sufficient for some applications, there are others that do not only require identification, but furthermore the exact position and orientation of the objects. In this paper, we present an approach to determine the position and orientation of multi-tagged objects. We introduce the general idea, then our developed system, and finally our preliminary findings. We also summarize our next steps and describe a planned test series.