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Advances in Human-Computer Interaction
Volume 2009, Article ID 713516, 13 pages
Research Article

Supporting Collaborative Privacy-Observant Information Sharing Using RFID-Tagged Objects

1JST/CREST and School of Science and Technology for Future Life, Tokyo Denki University, Chiyoda-Ku, Tokyo 101-0054, Japan
2Department of Industrial Engineering, University of Arkansas, Fayetteville, AR 72701, USA

Received 24 November 2008; Revised 1 July 2009; Accepted 29 September 2009

Academic Editor: Armando Barreto

Copyright © 2009 Shin'ichi Konomi and Chang S. Nam. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


RFID technology provides an economically feasible means to embed computing and communication capabilities in numerous physical objects around us, thereby allowing anyone to effortlessly announce and expose varieties of information anywhere at any time. As the technology is increasingly used in everyday environments, there is a heightening tension in the design and shaping of social boundaries in the digitally enhanced real world. Our experiments of RFID-triggered information sharing have identified usability, deployment, and privacy issues of physically based information systems. We discuss awareness issues and cognitive costs in regulating RFID-triggered information flows and propose a framework for privacy-observant RFID applications. The proposed framework supports users' in situ privacy boundary control by allowing users to (1) see how their information is socially disclosed and viewed by others, (2) dynamically negotiate their privacy boundaries, and (3) automate certain information disclosure processes.