Biometric recognition, or simply Biometrics, is a rapidly evolving field with applications ranging from accessing one's computer to gaining entry into a country. Biometric systems rely on the use of physical or behavioral traits, such as fingerprints, face, voice and hand geometry, to establish the identity of an individual. The deployment of large-scale biometric systems in both commercial (e.g., grocery stores, amusement parks, airports) and government (e.g., US-VISIT) applications has served to increase the public's awareness of this technology.

生物识别，或者简称为生物识别，是一个快速发展的领域，其应用范围从访问个人电脑到进入一个国家。生物特征识别系统依赖于使用身体或行为特征，如指纹、面部、声音和手的几何形状，来确定个人身份。在商业（如杂货店、游乐园、机场）和政府（如US-VISIT）应用中部署大规模生物识别系统有助于提高公众对这项技术的认识。