Biometric personal authentication using keystroke dynamics: A review

Authentication is the process of determining whether someone or something is, in fact, who or what it is declared to be. As the dependence upon computers and computer networks grows, the need for authentication has increased. Biometrics is the science and technology of authentication by identifying the living individual's physiological or behavioral attributes. Keystroke dynamics is a behavioral measurement and it utilizes the manner and rhythm in which each individual types. The approaches in keystroke dynamics can be categorized by the selection of features and the classification methods employed. The objective of this review paper is to summarize the well-known approaches used in keystroke dynamics in the last two decades.