<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/4c5494d9-95f2-4b95-aa04-ada73e23a08c/418580E3-A66C-4E15-BBC5-DFD1653934DE/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://arstechnica.com/science/news/2009/10/researchers-see-through-walls-with-wireless-mesh-gear.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss" href="http://arstechnica.com/science/news/2009/10/researchers-see-through-walls-with-wireless-mesh-gear.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss" style="font-size: 11px;">arstechnica.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/science/news/2009/10/researchers-see-through-walls-with-wireless-mesh-gear.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss">By <A href="http://arstechnica.com/authors/john-timmer/">John Timmer</A></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/science/news/2009/10/researchers-see-through-walls-with-wireless-mesh-gear.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss">October 1, 2009</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/science/news/2009/10/researchers-see-through-walls-with-wireless-mesh-gear.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss"><P class="news-item-teaser">Researchers have devised a way to use changes in signal strength from a wireless mesh to track people as they walked inside a room in near real time.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/science/news/2009/10/researchers-see-through-walls-with-wireless-mesh-gear.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/arstechnica.com/img/389A3E62-43F2-4B94-B5B2-B87768FE54A3" alt="Researchers see through walls with wireless mesh" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/science/news/2009/10/researchers-see-through-walls-with-wireless-mesh-gear.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss"><P> Wireless technology is exploding as the hardware becomes cheaper and uses less power. Chances are good that the upward trajectory will continue over the next few years, as companies are betting that smart devices and remote controls that use the short-range IEEE 802.15.4 protocol will find a place on the market. Now, researchers have used one of the features that provides that protocol with robustness against noise in order to track the movements of people around a room they couldn't otherwise see into. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/science/news/2009/10/researchers-see-through-walls-with-wireless-mesh-gear.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss"><P> This feature of 802.15.4 is what some researchers latched on to in order to probe a room that acted as a black box. There work hasn't been through peer review, but it has been <A href="http://arxiv.org/abs/0909.5417">placed in the arXiv preprint system</A>, where it was spotted by <A href="http://www.technologyreview.com/blog/arxiv/24193/">Technology Review</A>. </P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/418580E3-A66C-4E15-BBC5-DFD1653934DE/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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