Ubiquitous computing is coming of age. In the few short years of the lifetime of this conference, we have seen major changes in our emerging research community. When the conference started in 1999, as Handheld and Ubiquitous Computing, the field was still in its formative stage. In 2002, we see the Ubicomp conference (the name was shortened last year) emerging as an established player attracting research submissions of very high quality from all over the world. Virtually all major research centers and universities now have research programs broadly in the field of ubiquitous computing. Whether we choose to call it ubiquitous, pervasive, invisible, disappearing, embodied, or some other variant of computing, it is clear that Mark Weiser’s original vision has only become more and more relevant since the term was coined over 10 years ago. But, most important in our context, the interest in the field can be gauged from the rising number of full paper submissions to the conference: from about 70 in both 1999 and 2000, to 90 in 2001, to this year's record breaking 136! Counting technical notes, workshops, poster and video submissions, there were over 250 original works submitted to this year’s conference. This is an impressive effort by the research community, and we are grateful to everyone who took time to submit their work – without this, the conference would simply not exist.
Lecture Notes in Computer Science Edited by G. Goos, J. Hartmanis, and J. van Leeuwen
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Gaetano Borriello Lars Erik Holmquist (Eds.)
UbiComp 2002: Ubiquitous Computing 4th International Conference Göteborg, Sweden, September 29 - October 1, 2002 Proceedings
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Series Editors Gerhard Goos, Karlsruhe University, Germany Juris Hartmanis, Cornell University, NY, USA Jan van Leeuwen, Utrecht University, The Netherlands Volume Editors Gaetano Borriello University of Washington, Department of Computer Science and Engineering 98195 Seattle, Washington, USA E-mail:
[email protected] Intel Research Seattle, 98105 Seattle, Washington, USA E-mail:
[email protected] Lars Erik Holmquist Viktoria Institute, Future Applications Lab Box 620, 40530 Göteborg, Sweden E-mail:
[email protected]
Cataloging-in-Publication Data applied for Die Deutsche Bibliothek - CIP-Einheitsaufnahme Ubiquitous computing : 4th international conference ; proceedings / Ubicomp 2002, Göteborg, Sweden, September 29 - October 1, 2002. Gaetano Borriello ; Lars Erik Holmquist (ed.). - Berlin ; Heidelberg ; New York ; Hong Kong ; London ; Milan ; Paris ; Tokyo : Springer, 2002 (Lecture notes in computer science ; Vol. 2498) ISBN 3-540-44267-7 CR Subject Classification (1998): C.2, C.3, D.2, D.4, H.4, H.5, K.4 ISSN 0302-9743 ISBN 3-540-44267-7 Springer-Verlag Berlin Heidelberg New York This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, re-use of illustrations, recitation, broadcasting, reproduction on microfilms or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer-Verlag. Violations are liable for prosecution under the German Copyr