User authentication remains a challenging issue, despite the existence of a large number of
proposed solutions, such as traditional text-based, graphical-based, biometrics-based, Web …

Despite three decades of intensive research efforts, it remains an open question as to what
is the underlying distribution of user-generated passwords. In this paper, we make a …

Mobile devices and technologies have become increasingly popular, offering comparable
storage and computational capabilities to desktop computers allowing users to store and …

Biometric authentication schemes, ie, fingerprint and face authentication, raise serious
privacy concerns. To alleviate such concerns, hand authentication has been proposed …

To provide timely feedbacks to users, nearly every respectable Internet service now imposes
a password strength meter (PSM) upon user registration or password change. It is a rare bit …

As the convenience and cost benefits of natural user interface (NUI) technologies are
hastening their wide adoption, computing devices equipped with such interfaces are …

Graphical user authentication (GUA) is a common alternative to text-based user
authentication, where people are required to draw graphical passwords on background …

Visual attention, search, processing and comprehension are important cognitive tasks
during a graphical password composition activity. Aiming to shed light on whether individual …

User-generated textual passwords suffer from the conflict between security and usability.
System administrators usually adopt password composition policies to help users choose …

Mobile devices, such as smartphones and tablets, are frequently used for creation and
transmission of private and sensitive messages and files. While personal identification …