This document summarizes a presentation on privacy in business processes through user-centric identity management. It discusses challenges with 1:n and 1:n:m relationships where personal data is disclosed to multiple services. Two approaches are described: single sign-on and anonymous credentials. Neither fully addresses issues like linkability, non-transferability of data, and misuse of credentials. The document then proposes an approach called DREISAM that uses anonymous credentials and proxy credentials to enable delegation of rights over personal data while preserving user privacy. It outlines the work of WP14 in studying privacy requirements for identity management and business processes.