%0 Journal Article %T Application of a Dynamic Identity Authentication Model Based on an Improved Keystroke Rhythm Algorithm %A Wenchuan YANG %A Fang FANG %J Int'l J. of Communications, Network and System Sciences %P 714-719 %@ 1913-3723 %D 2009 %I Scientific Research Publishing %R 10.4236/ijcns.2009.28082 %X Keystroke rhythm identification, which extracts biometric characteristics through keyboards without addi-tional expensive devices, is a kind of biometric identification technology. The paper proposes a dynamic identity authentication model based on the improved keystroke rhythm algorithm in Rick Joyce model and implement this model in a mobile phone system. The experimental results show that comparing with the original model, the false alarm rate (FAR) of the improved model decreases a lot in the mobile phone system, and its growth of imposter pass rate (IPR) is slower than the Rick Joyce model¡¯s. The improved model is more suitable for small memory systems, and it has better performance in security and dynamic adaptation. This improved model has good application value. %K Biometric Identification Technology %K Keystroke Rhythm %K Identity Authentication %K Keystroke Latency Time %K IPR %K FAR %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=819