Method and apparatus for manufacturing tamper-resistant identification cards

摘要

An identification card for an individual contains textual data regarding the individual, a reproduction of the individual's signature and a photograph of the individual. The photograph has superimposed thereon a duplicate of the individual's signature as it appears elsewhere on the card. Through this modification of the photograph on the card with information that appears elsewhere, an unauthorized user is inhibited from tampering with the card by substituting one photograph for another.