Starting around 1999, a great many graphical password schemes have been proposed as
alternatives to text-based password authentication. We provide a comprehensive overview …

Mobile devices have brought a great convenience to us these years, which allow the users
to enjoy the anytime and anywhere various applications such as the online shopping …

Password patterns, as used on current Android phones, and other shape-based
authentication schemes are highly usable and memorable. In terms of security, they are …

Smartphone users have their own unique behavioral patterns when tapping on the touch
screens. These personal patterns are reflected on the different rhythm, strength, and angle …

In this paper, we present a novel multi-touch gesture-based authentication technique. We
take advantage of the multi-touch surface to combine biometric techniques with gestural …

Virtual keyboards of different smartphone platforms seem quite similar at first glance, but the
transformation from a physical to a virtual keyboard on a small-scale display results in user …

Large interactive displays are increasingly placed in public (or semipublic) locations,
including museums, shops, various city settings, and offices. This article discusses the …

Graphical password systems based upon the recall and reproduction of visual patterns (eg
as seen on the Google Android platform) are assumed to have desirable usability and …

Evaluating novel authentication systems is often costly and time-consuming. In this work, we
assess the suitability of using Virtual Reality (VR) to evaluate the usability and security of …

Nowadays, touchscreen mobile phones make up a larger and larger share in the mobile
market. Users also often use their mobile phones (eg, Android phones) to store personal …