The paper investigates the role of user bias in online trust systems and develops a methodology for the design of better systems. It delves into the workings of online computational trust systems under user bias and analyses the user behaviour through biases defined by Prospect theory. The results of an empirical study and the analysis are used to propose to the system designers a methodology for user bias identification and mitigation for trust systems based on the subjective logic theory, which reduces complexity and improves the user experience and the system performance.
COBISS.SI-ID: 29835815
This paper investigates user choices in password selection for recognition-based graphical authentication in online services. 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 colour, shape, and category. The results in the form of graphical password selection guidelines are useful for any online services providers who want to improve security and usability of their graphical authentication solutions.
COBISS.SI-ID: 23192038
The paper describes a structural model on the relation between user’s trust in mobile and ad-hoc networks and characteristics of her environment. The model is based on an analysis and empirical evaluation of the mobile phones inbuilt security measures and user attitude and awareness about privacy among the users from several countries. The analysis and evaluation results show that most of the smart phones provide some sort of protection. Key environment factors that influence the attitude and awareness of the users are level of development, accessibility of the modern technology, and the user purchasing power.
COBISS.SI-ID: 28585767
Many customised Internet service innovations encounter a situation in which they can only fully expand their value proposition if user privacy is somewhat affected. This paper investigates, on the sample of 4.500 EU citizens, the role of user privacy concerns on adoption of advanced technological solutions for personal identification. The results show that privacy concerns do have an adverse effect on consumers’ intention to accept an IT innovation, but this effect is purely indirect, i.e. mediated by trust and perceived risks. If service providers manage to keep the level of perceived risk low or if they succeed in building consumer trust, they can effectively mitigate the negative consequences of privacy concerns.
COBISS.SI-ID: 23085030
The paper identifies key factors that affect acceptance of telehealth services among older users. Although telehealth offers an improved approach to providing healthcare services, its adoption by users remains slow. By a rigorous analysis of the results of a survey among 400 users we have found that the level at which the services are perceived as easy to use and manage is the leading acceptance predictor in older users’ service acceptance. Also, the intuitiveness of graphical user interfaces and perceived security are key factors determining the success of the initial adoption. The paper also introduces important methodological guidelines for measuring perceptions on a conceptual level of future services that currently do not exist.
COBISS.SI-ID: 23020006