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 …

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 …

Graphical passwords were proposed as an alternative to overcome the inherent limitations
of text-based passwords, inspired by research that shows that the graphical memory of …

One of the most popular contemporary graphical password approaches is the Pattern-Lock
authentication mechanism that comes integrated with the Android mobile operating system …

Currently people store more and more sensitive data on their mobile devices. Therefore it is
highly important to strengthen the existing authentication mechanisms. The analysis of …

Authentication today mostly relies on passwords or personal identification numbers (PINs).
Therefore the average user has to remember an increasing amount of PINs and passwords …

Android's graphical authentication mechanism requires users to unlock their devices by"
drawing" a pattern that connects a sequence of contact points arranged in a 3x3 grid. Prior …

Touch-enabled user interfaces have become ubiquitous, such as on ATMs or portable
devices. At the same time, authentication using touch input is problematic, since finger …

With the rich functionalities and enhanced computing capabilities available on mobile
computing devices with touch screens, users not only store sensitive information (such as …

Most of today's smartphones and tablet computers feature touchscreens as the main way of
interaction. By using these touchscreens, oily residues of the users' fingers, smudge, remain …