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ABSTRACT
<p>Discover how 2G and 2.5G cell phones can help provide ubiquitous spatial-information services. with 3G cell phones just on the horizon, this approach promises to be practical and convenient.</p>
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CITATION

S. Shimada, K. Maruyama and M. Tanizaki, "Ubiquitous Spatial-Information Services Using Cell Phones," in IEEE Micro, vol. 22, no. , pp. 25-34, 2002.
doi:10.1109/MM.2002.1134341
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