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Biometric systems have been vigorously debated in France. In March 2012, the Conseil Constitutionnel, the highest authority on the French Constitution, declared the provisions of a law permitting judicial and police use of a centralized national ID database to be unconstitutional. The proposed legislation mandated compulsory civilian ID cards containing a chip designed to store personal and biometric information, including home address, marital status, eye color, and fingerprints. Read more about opposition to biometrics in France.

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