Thesis - Instituto de Telecomunicações

Chapter 7ConclusionsIn this chapter we summarize the developed work presenting an overall view of what wasaccomplished in this thesis. We describe application scenarios derived from our results,proposing implementations of behavioral biometric systems based on the studied signals.Future goals and work guidelines are presented as next research steps. We discuss somefuture implications of the attained advances in the particular field of behavioral biometrics,where our contributions are focused.7.1 Overall ResultsWe selected some signal sources as new behavioral biometrics traits. The complex characteristicsof these dynamic data sources created a set of problems and opportunities toapply and further advance certain pattern recognition techniques. The current direction ofthe overall biometrics research agenda is multimodality. The multimodal approach is beingpursued by the major research groups as a way to overcome the difficulties of each of theindividual traits. By providing new traits, even soft-biometric ones, we are contributing intothis direction. The advances we proposed in classifier fusion also support the multimodalapproach. A younger research direction is the creation of continuous biometrics, where thebehavioral traits are an interesting source of information. With that in mind, Our work hasbeen structured to be usable in long time acquisition environments.We introduced a new behavioral biometric trait - the pointer dynamics trait, and obtainedresults that can be used as a soft-biometric and as a continuous biometric.137