Accessible Ultrasonic PositioningMichael McCarthy, Paul Duff, Henk L Muller, Cliff Randell, Accessible Ultrasonic Positioning. IEEE Pervasive Computing, 5(4). ISSN 1536-1268, pp. 86–93. October 2006. PDF, 1055 Kbytes. External information
Indoor positioning systems haven’t been readily accessible outside industrial and academic research, partly because these technologies have been complex and expensive. The development of inexpensive, easy-to use positioning technology simplifies the deployment of location-based applications.
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