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This paper proposes a human computer interface which is based on Active Radio frequency identification (Active RFID) technique to let human communicate with computer by analyzing the signal from tags. For retrieving those signals from tags, how to decreasing the noises created by surrounding environment and detecting useful information from variant signals are the most important. In the authors' proposed method, they adopt a train procedure as preprocessing to categorize all of signals into two categories: noise and real data. After the real data is retrieved, they use "Music Director" and "DJ Scratch" as applications to let user play with computer. The experimental results show the proposed method can analyze the signals from tags successfully with high detection rate.
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