Method of reading at least one bar code and system for...

G - Physics – 06 – K

Patent

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G06K 19/10 (2006.01)

Patent

CA 2647490

The present invention relates to a method of reading at least one bar code (20) carried by a substrate (21), the method comprising the following steps: a) generating, especially in an automatic manner, when presenting the bar code to a system for reading the bar code, at least one authentication cue related to an intrinsic physical characteristic of the substrate and independent of the data contained in the bar code, and b) allowing the reading of the bar code (20), only in the event of a positive authentication of the substrate or reading the bar code regardless of the result of the authentication of the substrate and in the event of negative authentication of the substrate, preventing access to just one part of the data contained in the bar code and/or to any data that may be associated with the bar code, and which is stored on a separate data medium from the substrate.

La présente invention concerne un procédé de lecture d'au moins un code à barres (20) porté par un substrat (21), le procédé comportant les étapes suivantes : a) lors d'une présentation du code à barres à un système de lecture du code à barres, générer, notamment de manière automatique, au moins une information d'authentification liée à une caractéristique physique intrinsèque du substrat et indépendante des données contenues dans le code à barres, et b) permettre la lecture du code à barres (20), seulement en cas d'authentification positive du substrat ou lire le code à barres quel que soit le résultat de l'authentification du substrat et en cas d'authentification négative du substrat, empêcher l'accès à une partie seulement des données contenues dans le code à barres et/ou à des données éventuelles associées au code à barres, mémorisées sur un support de données distinct du substrat.

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