What is Identity system

Designing for trust is a methodology that attempts to design our perception of trust in information systems, in the long-term expectation that such systems will foster justified trust among people. The methodology contains several tools, but this chapter concentrates on a specific analytical tool that can be used to assess the compatibility between existing and required relationships of trust, in the context of information flow. While still under development, this methodology brings interesting results, identifying and addressing the strengths and weaknesses of incoming technical systems before they are actually deployed. This chapter discusses basic principles of designing for trust, presents the architectures of trust compatibility assessment tool and shows its applicability to citizen identity systems, using the proposed United Kingdom scheme as an example.