Census Examining 'Re-identification'
Marketers and data aggregators may be attempting to link individuals with their anonymously-submitted census forms. The U.S. Census Bureau is employing a number of techniques to combat re-identification. "Data-swapping," for instance, is the practice of switching data points on one citizen with another citizen's data.Census bureau blurs data to keep names confidential, MSNBC.com (WSJ), February 14, 2001.
