Why That Picture? Discovering Password Properties in Recognition-based Graphical Authentication.
Journal
International Journal of Human-Computer Interaction
Date Issued
2016-08-05
Author(s)
Jerman-Blazic, B
DOI
10.1080/10447318.2016.1220103
Abstract
Numerous graphical authentication ideas have been proposed on how to address the security
and usability of text-based passwords. However, it remains unclear how users approach graphical
password selection and the inherent personal bias when selecting images. This study investigates
user choices in password selection for recognition-based graphical authentication. Our analysis is
based on a total of 302 participants continuously using a graphical authentication system during a
6-week long study. The results show pronounced preference effects for image properties such as
color, shape and category. Additionally, there is a significant difference between genders in the
selected images based on the same properties.
and usability of text-based passwords. However, it remains unclear how users approach graphical
password selection and the inherent personal bias when selecting images. This study investigates
user choices in password selection for recognition-based graphical authentication. Our analysis is
based on a total of 302 participants continuously using a graphical authentication system during a
6-week long study. The results show pronounced preference effects for image properties such as
color, shape and category. Additionally, there is a significant difference between genders in the
selected images based on the same properties.
Subjects