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Abstract
Wireless sensor networks (WSN) are the essential successful technology of the next and contemporary millennium. Wireless sensor networks contain a large number of very small nodes that converge wirelessly. WSNs are being used in a wide range of packages. The latest advances in WSN have allowed extending the area of its applicability. Initially designed to perform clean army operations, but its software has been unlimited for the health, traffic and loads of different commercial and consumer regions. This document indicates a quick survey of WSN applications in real international environments.