PassCard enables CardSpace to be used as a password manager, thereby both improving the usability and security of passwords as well as encouraging CardSpace adoption. Usernames and passwords are stored in CardSpace personal cards, and these cards can be used to sign on transparently to corresponding websites. PassCard does not require any changes to login servers, default browser security settings or to the CardSpace identity selector and, in particular, it does not require websites to support CardSpace. We describe how PassCard operates here and here, including presenting a proof-of-concept prototype. Security, usability and operational analyses are also provided.