Our daily lives are taking part in a digital world more and more. Consumers communicate increasingly digital with service providers, governments are becoming e-Governments and collaborations between organisations are becoming more digitized. 

Existing services are becoming more efficient and new services become possible. Though developments as working in the cloud and the Internet of Things, possibilities change. However, new risks also arise. More information is collected, often personal or confidential information. New dependencies arise as services become dependant on the continuity and quality of information that other organisations deliver. 

We need innovative solutions to control these risk and to create the needed digital trust. These solution must balance the contradicting demands in efficiency, security, privacy and useability in the right way. This is not only a technical challenge, but a business, legal, governmental and communication challenge. Central to this challenge are digital identities: how can parties recognize eachother, and who is allowed to do what?