Are biometrics unique identifiers?
A unique identifier is a fixed number or value associated with a specific person. The most common example of a unique identifier would be the Social Security number, which is issued at a young age and used for the purposes of employment and taxation throughout one’s life. Unique identifiers are problematic from a privacy perspective, as they make possible the linking of information in separate databases. Social security numbers have come to be used as semi-unique identifiers (some numbers are mistakenly issued more than once, and users can assume false social security numbers).
