51253 news 1265751658 1475895880 <![CDATA[Computing Ph.D. Candidate Develops New Surveillance System]]>

]]> 2008-05-16T00:00:00-04:00 Shwetak Patel, a doctoral candidate in the School of Interactive Computing, has developed a device that can turn a home's ventilation system into a surveillance system by measuring minute changes in air pressure in the rooms. Patel says his approach is much cheaper than motion sensors, because it simply modifies existing systems. Source: New Scientist

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