Usability evaluation of biometrics in mobile environments

Actual trends in HCI tend to move systems to mobile environments. Moreover, biometrics is a technology that is entering maturity, getting involved in several security architectures nowadays. Thus, migrating biometrics to mobile scenarios is a trending topic in the research community. Nevertheless, in this kind of systems, usability has been put aside in the intent of produce better performance and it could involve undesirable results. In this work a behavioural biometric modality (handwritten signature recognition) is tested in mobile environments, in order to obtain a complete usability evaluation. Users signed in an iPad with different styluses in different scenarios, correlating performance results with several usability parameters (gathered through video, notes and forms) and obtaining interesting outcomes.