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

We evaluate two decades of proposals to replace text passwords for general-purpose user
authentication on the web using a broad set of twenty-five usability, deployability 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 …

Many security primitives are based on hard mathematical problems. Using hard AI problems
for security is emerging as an exciting new paradigm, but has been under-explored. In this …

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 …

In this paper, we present XSide, an authentication mechanism that uses the front and the
back of smartphones to enter stroke-based passwords. Users can switch sides during input …

Graphical passwords are often considered prone to shoulder-surfing attacks, where
attackers can steal a user's password by peeking over his or her shoulder in the …

Challenging the conventional wisdom that users cannot remember cryptographically-strong
secrets, we test the hypothesis that users can learn randomly-assigned 56-bit codes …

Pattern unlock is one of the entry protection mechanisms in Android system for unlocking the
screen. By connecting 4–9 dots in a 3× 3 grid, the user can set up an unlock pattern which is …

With the rapid development of information technology (IT) in financial industry, financial
technology (FinTech) has become an emerging area for enterprises and organizations. Due …