Process and device for authenticating or certifying at least one item of information contained in a memory of a portable electronic carrier, such as a credit card. To certify an item of information (I) recorded in a memory (M) of a card (C), the process consists in causing processing circuits (TC) of...http://www.google.fr/patents/US4544833?utm_source=gb-gplus-shareBrevet US4544833 - Process and apparatus for authenticating or certifying at least one item of information contained in a memory of a removable and portable electronic carrier, such as a card
Process and apparatus for authenticating or certifying at least one item of ...
