This book constitutes the refereed postconference proceedings of the 4th IFIP WG 9.2, 9.6, 11.6, 11.7/FIDIS International Summer School, held in Brno, Czech Republic, in September 2008.The 20 revised
Digitising personal information is changing our ways of identifying persons and managing relations. What used to be a "natural" identity, is now as virtual as a user account at a web portal, an email
