Biometric Authentication using Soft Biometric Traits

For secure computing and networking systems in the modern day, passwords and physical tokens alone do not serve a major purpose in a user's authentication. Traditional systems of security including the biometric systems, authenticate individuals at the time of login only and no further identification or verification is performed during the activity session of the user. This results for a compromised system of security resulting in the need for a system with greater robustness. This survey paper focuses on the need for a continuous authentication through soft biometrics and explores the alternatives for various systems applying soft biometrics and also considers a multimodal approach of biometrics, towards the user and system usability and security. This survey is intended for further researches and practice in the domain of biometrics.