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 …

We investigate opportunities and challenges of running virtual reality (VR) studies remotely.
Today, many consumers own head-mounted displays (HMDs), allowing them to participate …

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 …

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 …

It has been more than 50 years since the concept of passwords was introduced and adopted
in our society as a digital authentication method. Despite alternative authentication methods …

Free-form gesture passwords have been introduced as an alternative mobile authentication
method. Text passwords are not very suitable for mobile interaction, and methods such as …

One approach to mitigate shoulder surfing attacks on mobile devices is to detect the
presence of a bystander using the phone's front-facing camera. However, a person's face in …

This article proposes a user-adaptable and personalized authentication paradigm for
healthcare organizations, which anticipates to seamlessly reflect patients' episodic and …