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In this paper we investigate the problem of user authentication using keystroke biometrics. A new distance metric that is effective in dealing with the challenges intrinsic to keystroke dynamics data, i.e., scale variations, feature interactions and redundancies, and outliers is proposed. Our keystroke biometrics algorithms based on this new distance metric are evaluated on the CMU keystroke dynamics benchmark dataset and are shown to be superior to algorithms using traditional distancedoi:10.1109/cvprw.2012.6239225 dblp:conf/cvpr/ZhongDJ12 fatcat:5dgutht7q5ezfhu6agnspgdwzq