S2: Trust

The building of trust is of vital importance for the acceptance and thus the economic success of situational ubiquitous systems. The collection and storage of data which is needed for technical knowledge exploration, the automatically recorded context and the invisible and automatically adapting systems are new for the user and therefore perhaps unsettling. For this reason the development of situational ubiquitous systems must include trust supporting components for the later promoting of acceptance in technology design from the outset. Consequently adequate methods, models and concepts have to be developed.

In Sub-Project S2 therefore a theory-driven-design-approach following Briggs is chosen. Central cause-and-effect-mechanisms for trust-building, especially in ubiquitous systems, are explored in the first phase of the Sub-Project. Furthermore adequate mechanisms and concepts for the design of business-, service, and operator-models especially from the view of the trust perspective are analyzed. Based on explorative analysis determinants of trust-building in exchange relationships in situational ubiquitous systems are identified and their dependencies are modeled.

In a second phase these models are tested empirically. In the third phase of the Sub-Project derived from the explored hypotheses concepts, models and methods for the development of trust-supporting components are developed and concrete design guidelines for ubiquitous networked systems are worked out. Furthermore it has to be evaluated whether the developed trust-supporting components really have led to trust-building or not.

The approach to deduce and empirically test design options and design guidelines directly from empirical tested theories of trust-building in self-adaptive UC-systems requires further research.

  • How are trust relations and the process of trust building changing under altering contexts, when the majority of the interactions works automatically in the background, while the user as the trust giver has only indirect influence on automatized processes?
  • Is trust a constant phenomenon or is it maintainable?
  • How can trust-supporting components be developed for specific ubiquitous applications?
  • Is it possible to derive general patterns for encouraging trust in ubiquitous systems?
  • What are the possible effects on business models and processes?
  • What is the difference between the trust relations to one or more service providers and the trust relations to other end-users?