The success of electronic authentication systems, be it eID card systems or Internet authentication systems such as CardSpace, highly depends on the provided level of user-privacy. Thereby, an important requirement is an efficient means for revocation of the authentication credentials. In this paper we consider the problem of revocation for certificate-based privacy-protecting authentication sy...

Editor—Sydor and colleagues studied trainee behaviour in a crisis situation, and trainee ability to challenge a decision by a consultant anaesthetist to administer blood to a patient who is a Jehovah’s Witness. This was described as unethical, although perhaps a better term would be ‘in breach of the law’. I would like to put it to the authors that unless the notes were shown to contain the pro...