In search of the silver bullet to solve the password problem, the field of knowledge-based
authentication has become bloated with novel proposals aiming to replace textual …

A lot of research is being conducted into improving the usability and security of phone-
unlocking. There is however a severe lack of scientific data on users' current unlocking …

Research has brought forth a variety of authentication systems to mitigate observation
attacks. However, there is little work about shoulder surfing situations in the real world. We …

Mobile device authentication has been a highly active research topic for over 10 years, with
a vast range of methods proposed and analyzed. In related areas, such as secure channel …

In addition to storing a plethora of sensitive personal and work information, smartphones
also store sensor data about users and their daily activities. In order to understand users' …

There is a growing need for usable and secure authentication in immersive virtual reality
(VR). Established concepts (eg, 2D authentication schemes) are vulnerable to observation …

To prevent unauthorized parties from accessing data stored on their smartphones, users
have the option of enabling a" lock screen" that requires a secret code (eg, PIN, drawing a …

Recent research has improved our understanding of how to create strong, memorable text
passwords. However, this research has generally been in the context of desktops and …

Authentication based on passwords is used largely in applications for computer security and
privacy. However, human actions such as choosing bad passwords and inputting passwords …

PINs and patterns remain among the most widely used knowledge-based authentication
schemes. As thermal cameras become ubiquitous and affordable, we foresee a new form of …