This book constitutes the refereed proceedings of the Second International Conference on Security in Pervasive Computing, SPC 2005, held in Boppard, Germany in April 2005.The 14 revised full papers and 3 revised short papers presented together with abstracts of 5 invited talks were carefully reviewed and selected from 48 submissions. The papers are organized in topical sections on smart devices and applications, authentication, privacy and anonymity, and access control and information flow.

By presenting state-of-the-art results in logical reasoning and formal methods in the context of artificial intelligence and AI applications, this book commemorates the 60th birthday of Jorg H. Siekmann.

The 30 revised reviewed papers are written by former and current students and colleagues of Jorg Siekmann; also included is an appraisal of the scientific career of Jorg Siekmann entitled "A Portrait of a Scientist: Logics, AI, and Politics." The papers are organized in four parts on logic and deduction, applications of logic, formal methods and security, and agents and...

The ongoing compression of computing facilities into small and mobile devices like handhelds, portables or even wearable computers will enhance ubiquitous information processing. The basic paradigm of such pervasive computing is the combination of strongly decentralized and distributed computing with the help of diversi?ed devices allowingforspontaneousconnectivityviatheInternet.Computerswillbecomeinvisible to the user, and exchangeof informationbetween devices will effectivelybe beyondthe user s control. Assuming a broad usage of more powerful tools and more effective ways to use them the...