Marit Hansen is Deputy Privacy Commissioner of the Data Protection Authority Schleswig-Holstein, Germany (ULD - Unabhaengiges Landeszentrum fuer Datenschutz). Within ULD she is in charge of the Privacy Enhancing Technologies (PET) Division and the Innovation Centre Privacy & Security. Since her diploma in computer science in 1995 she has been working on security and privacy aspects especially concerning the Internet, anonymity, pseudonymity, identity management, biometrics, multilateral security, and e-privacy from both the technical and the legal perspectives. In several projects she and her team actively participate in technology design in order to support PET and give feedback on legislation, e.g., "AN.ON Anonymity online" (2001-2006 http://www.anon-online.de/, "SPIT-AL SPIT Prevention Solution"(2005-2006 http://www.spit-filter.com/http://www.prise.oeaw.ac.at/). Currently Marit Hansen is working in particular on user-centric identity management and eID systems, among others as Activity leader in the IST FP6 projects "PRIME Privacy and Identity Management for Europe" (2004-2008) and "FIDIS Future of Identity in the Information Society" (2004-2009 http://www.fidis.net/