This book offers an overview of the field of continuous biometric authentication systems which capture user biometrics from devices continuously and transparently. This book covers the traditional methods users authenticate (e.g.: passwords) as well as discusses how such techniques have become cumbersome in the world of mobile devices and short sessions. The concept of continuous biometric authentication is introduced and how these systems can be constructed. The different biometrics that these systems may utilize (e.g.: touchscreen-gesture interactions) are described and relevant studies surveyed. It also provides important considerations and challenges. This book brings together a wide variety of  key motivations, components and advantages of continuous biometric authentication systems. The overview is kept high level, so as not to limit the scope to any single device, biometric trait, se case or scenario. Therefore, the contents of this book are applicable to devices ranging from smartphones to desktop computers, utilizing biometrics ranging from face recognition to keystroke dynamics. It also provides the metrics from a variety of existing systems such that users can identify the advantages and disadvantages of different approaches.This book targets researchers and lecturers working in authentication as well as advanced-level students in computer science interested in this field. Professionals working within this topic area will also want to purchase this book.weiterlesen