database. Index Terms — anti-spoofing, face biometric, textural analysis, counter measure.

Abstract not found

Network survivability has been studied extensively from the view of node and link failures. The domain of survivability goes beyond just the physical failures and one needs to address this issue when faced with security threats that can render the network logically dysfunctional without causing any

the non-exclusive right to publish the Work electronically and in a non-commercial purpose make it accessible on the Internet. The Author warrants that he/she is the author to the Work, and warrants that the Work does not contain text, pictures or other material that violates copyright law. The Author shall, when transferring the rights of the Work to a third party (for example a publisher or a company); acknowledge the third party about this agreement. If the Author has signed a copyright agreement with a third party regarding the Work, the Author warrants hereby that he/she has obtained any necessary permission from this third party to let Chalmers University of Technology and University of Gothenburg store the Work electronically and make it accessible on the Internet.

discussion of the relevance of this work and the upcoming issues it faces. PIN, authentication, security, usability, observation Keywords ACM Classification Keywords H5.2. User Interfaces: Input devices and strategies General Terms Security, Human Factors Introduction The Internet has ushered in a

1.1 Private and Public Key Cryptography..................... 5

Hiermit versichere ich, die vorliegende Diplomarbeit selbstständig und unter ausschliesslicher Verwendung der angegebenen Quellen und Hilfsmittel angefertigt zu haben. Diese Arbeit hat in gleicher oder ähnlicher Form noch keiner Prüfungsbehörde vorgelegen. Darmstadt, 14. Februar 2006

's faces from images. For marker detection and tracking, probabilistic AdaBoost and particle filtering are used. Spindler et al. [53] apply similar ideas in the context of building automation and monitoring applications. Personal data is obfuscated based on individual privacy settings. For identification

I declare that this thesis is my own account of my research and contains as its main content work which has not previously been submitted for a degree at any tertiary education institution.

IOS Press Utilization of intelligent agents for supporting citizens in their access to e-government services 1