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Open AccessJournal ArticleDOI

The active badge location system

TLDR
A novel system for the location of people in an office environment is described, where members of staff wear badges that transmit signals providing information about their location to a centralized location service, through a network of sensors.
Abstract
A novel system for the location of people in an office environment is described. Members of staff wear badges that transmit signals providing information about their location to a centralized location service, through a network of sensors. The paper also examines alternative location techniques, system design issues and applications, particularly relating to telephone call routing. Location systems raise concerns about the privacy of an individual and these issues are also addressed.

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Book

Usability Engineering

Jakob Nielsen
TL;DR: This guide to the methods of usability engineering provides cost-effective methods that will help developers improve their user interfaces immediately and shows you how to avoid the four most frequently listed reasons for delay in software projects.
Proceedings ArticleDOI

RADAR: an in-building RF-based user location and tracking system

TL;DR: RADAR is presented, a radio-frequency (RF)-based system for locating and tracking users inside buildings that combines empirical measurements with signal propagation modeling to determine user location and thereby enable location-aware services and applications.
Proceedings ArticleDOI

Towards a Better Understanding of Context and Context-Awareness

TL;DR: Some of the research challenges in understanding context and in developing context-aware applications are discussed, which are increasingly important in the fields of handheld and ubiquitous computing, where the user?s context is changing rapidly.
Proceedings ArticleDOI

The Cricket location-support system

TL;DR: The randomized algorithm used by beacons to transmit information, the use of concurrent radio and ultrasonic signals to infer distance, the listener inference algorithms to overcome multipath and interference, and practical beacon configuration and positioning techniques that improve accuracy are described.
Journal ArticleDOI

Survey of Wireless Indoor Positioning Techniques and Systems

TL;DR: Comprehensive performance comparisons including accuracy, precision, complexity, scalability, robustness, and cost are presented.
References
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Journal ArticleDOI

Smart tags-the distributed-memory revolution

Peter Hewkin
- 22 Jun 1989 - 
TL;DR: Smart tags as discussed by the authors are small devices containing a combination of memory, data processing and communications capabilities, which can communicate without physical contact with purpose-specific stations over a range from a few millimetres up to several metres.
Journal ArticleDOI

Chipnet: an optical network of terminals and workstations

TL;DR: An experimental network is described which utilizes a novel optical link technology which is particularly useful where workstations and terminals are to be interconnected in large rooms and the physical location of stations may be changed without disrupting the network.
Book

Integrated Services Digital Networks: From Concept to Application

J. Ronayne
TL;DR: An introduction to "ISDN" which brings the technology up-to-date, incorporating developments in "ATM", "SDH" and Broadband "IS DN".