  The interconnectedness of people, services and devices is a defining aspect
of the digital revolution, and, secure digital identities are an important
prerequisite for secure and legally compliant information exchange. Existing
approaches to realize a secure identity management focus on central providers
of identities such as national authorities or online service providers. Hence,
changing residence or service provider often means to start over and creating
new identities, because procedures for data portability are missing.
Self-sovereign digital identities are instead created and managed by
individuals, and enable them to maintain their digital identities independent
from residence, national eID infrastructure and market-dominating service
providers.
