Int. J. Biometrics, Vol. 1, No. 1, 2008 81 Behavioural biometrics: a survey and classification Roman V. Yampolskiy* Department of Computer Science and Engineering and IGERT in GIS University at Buffalo 2145 Monroe Ave. #4 Rochester, NY 14618, USA E-mail: rvy@buffalo.edu *Corresponding author Venu Govindaraju Department of Computer Science and Engineering, CUBS University at Buffalo 520 Lee Entrance, Suite 202 Buffalo, NY 14228, USA E-mail: govind@buffalo.edu Abstract: This study is a survey and classification of the state-of-the-art in behavioural biometrics which is based on skills, style, preference, knowledge, motor-skills or strategy used by people while accomplishing different everyday tasks such as driving an automobile, talking on the phone or using a computer. The authors examine current research in the field and analyse the types of features used to describe different types of behaviour. After comparing accuracy rates for verification of users using different behavioural biometric approaches, researchers address privacy issues which arise or might arise in the future with the use of behavioural biometrics. Keywords: behavioural biometrics; features; motor-skill; privacy; user verification. Reference to this paper should be made as follows: Yampolskiy, R.V. and Govindaraju, V. (2008) ‘Behavioural biometrics: a survey and classification’, Int. J. Biometrics, Vol. 1, No. 1, pp.81-113. Biographical notes: Roman V. Yampolskiy holds an MS in Computer Science degree from Rochester Institute of Technology (2002) and is a PhD candidate in the department of Computer Science and Engineering at the University at Buffalo. His studies are supported by the National Science Foundation IGERT fellowship. Roman’s main areas of interest are artificial intelligence, behavioural biometrics and intrusion detection. Roman has a number of publications describing his research in neural networks, genetic algorithms, pattern recognition, and behavioural profiling. Venu Govindaraju is a Professor of Computer Science and Engineering at the University at Buffalo (SUNY Buffalo). He received his B-Tech (honours) from the Indian Institute of Technology (IIT), Kharagpur, India in 1986, and his PhD from UB in 1992. He has co-authored more than 230 scientific papers. He has been the PI/Co-PI of projects funded by government and industry for over $50M in the last 15 years. He is the Founding Director of the Centre for Unified Biometrics and Sensors (CUBS) and the Associate Director of the Centre for Document Analysis and Recognition (CEDAR). Copyright © 2008 Inderscience Enterprises Ltd.