Trust management of ubiquitous multi-display environments

Abstract

While a lot of research has been devoted to improving the security and the reliability of ubiquitous display environments, work on the user experience factor of trust is still scarce. To ensure that ubiquitous environments find acceptance among users, the user experience factor of trust should, however, not be underestimated. In this paper, we present a decision-theoretic approach to trust management that we consider particularly appropriate when a system has to balance the benefits and risks of a decision carefully. In the paper, we define decision policies that help maintain trust in critical situations, such as the loss of sensor data or the presence of unknown people. The approach has been employed in three interactive applications that have been developed as part of a university-wide ubiquitous displays management system. © 2012 Springer-Verlag Berlin Heidelberg.