Abstract Graphical Authentication Systems are a potential replacement or supplement for
conventional authentication systems. Several studies have suggested graphical …

Nowadays, user authentication is one of the important topics in information security. Text-
based strong password schemes could provide with certain degree of security. However, the …

Research in user authentication has been a growing field in HCI. Previous studies have
shown that peoples' graphical memory can be used to increase password memorability. On …

Recent work showed that using image processing techniques on thermal images taken by
high-end equipment reveals passwords entered on touchscreens and keyboards. In this …

Wearable technologies such as smart-glasses can sense, store and display sensitive
personal contents. In order to protect this data, users need to securely authenticate to their …

Nowadays, user authentication is one of the important topics in information security. Strong
text-based password schemes could provide with certain degree of security. However, the …

Nearly all smartphones and tablets support unlocking with a short user-chosen secret: eg, a
numeric PIN or a pattern. To address users' tendency to choose guessable PINs and …

Reusing passwords across multiple websites is a common practice that compromises
security. Recently, Blum and Vempala have proposed password strategies to help people …

Previous work in the literature has shown that back-of-device (BoD) authentication is
significantly more secure than standard front-facing approaches. However, the only BoD …

In this article, we present a new user authentication technique for touchscreen-based
smartphone users that augments pseudo touch pressure as an extra security measure to the …