6. What does re-identification mean? Give an example. (Chp.2)
Re-identification is the process of identifying an individual from sets of anonymous data. By itself, many kinds of information collected from an individual could not be used to identify that person. A birthdate could belong to millions of individuals. A zip code could belong to hundreds of thousands of people. However, if you could combine those two records, everyone living in a specific zip code with the same birth date, you could significantly reduce the number of individuals covered.
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