Advancing Trust Visualisations for Wider Applicability and User Acceptance

Abstract

There are only a few visualisations targeting the communication of trust statements. Even though there are some advanced and scientifically founded visualisations-like, for example, the opinion triangle, the human trust interface, and T-Viz-the stars interface known from e-commerce platforms is by far the most common one. In this paper, we propose two trust visualisations based on T-Viz, which was recently proposed and successfully evaluated in large user studies. Despite being the most promising proposal, its design is not primarily based on findings from human-computer interaction or cognitive psychology. Our visualisations aim to integrate such findings and to potentially improve decision making in terms of correctness and efficiency. A large user study reveals that our proposed visualisations outperform T-Viz in these factors.

A Concept and Evaluation of Usable and Fine-Grained Privacy-Friendly Cookie Settings Interface

“…Task 5 Allow third-party cookies from five selected websites 7 ; Task 6 Allow storing login cookies from the Twitter website.…”

“…Similarly, the available assistant was mentioned as an advantage several times (4). A significant number of the participants also answered that they liked the functionality introduced by the extension that enabled allowing or blocking third-party cookies for individual websites (7). Three participants did not answer the question.…”

“…Namely, some participants mistakenly thought that the extension actually has access to the login data of the participants. Another disadvantage mentioned by the participants was the lack of confirmation feedback that allowed the participants to see that their chosen settings have been saved by the extension (7). Furthermore, several participants did not like that the assistant tab is displayed each time the extension settings page is opened (6), with one of the participants elaborating that it would make more sense to display the tab with general settings first.…”

“…Furthermore, it might be an interesting line of future work to study the impact of our extension on understandability of the cookie settings and on the participants' ability to make more informed decisions in more detail. For further improvements of the extension, other ways to convey information about different configuration possibilities, including visualization methods such as proposed in [7] can be included. Finally, as cookies are only one example of technologies that impact the privacy of the end user, the suitability of our concept for supporting users in their privacy configuration in other domains will be studied.…”

“…The websites were Facebook, Bing, Instagram, Amazon, and Twitter 7. Same websites as in Task 4 were used.…”