Activity Recorder: A Device to Record User's Activities Using RFIDs and Sensors

Jun'ichi YURA  Hiroshi SAKAKIBARA  Jin NAKAZAWA  Hideyuki TOKUDA  

IEICE TRANSACTIONS on Communications   Vol.E90-B   No.12   pp.3480-3495
Publication Date: 2007/12/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.12.3480
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Ubiquitous Sensor Networks)
wireless sensors,  RFID technology,  mobile device,  activity recorder,  life log,  

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We have been investigating a new class of ubiquitous services, called Activity Logging, which takes advantage for private and public sensors and the RFID tags on real-world objects. The purpose of Activity Logging is to digitally record users' interests with real-world objects and users' context to describe the users' activity. Such digital information acquired from a range of sensors and tags, if being accumulated, forms a great data source for users to recall their activities later or to share the activities with others. This paper explores the design space to realize Activity Logging, and proposes a simple mobile device called Activity Recorder that marries public and private sensors to provide a powerful Activity Logging service. An Activity Recorder contains a range of private sensors, and has communication capability to work with public sensors around the user.