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Haiyun Xu has a strong background in software development, security research, and biometrics. With experience at companies like Software Improvement Group, Center for Advanced Security Research Darmstadt, Siemens, and Sony Ltd., Xu has held various titles including Head of Development and Operations, Chief Security Officer, and Senior Researcher. Xu's educational background includes a Dr. degree in Pattern Recognition and Biometrics from the University of Twente and a M.E. degree in Electrical Engineering from Beijing University of Technology.