Multiple tickets on smart cards

Details Multiple tickets on smart cards Multiple tickets on smart cards

G - Physics

06

K

G06K 19/073 (2006.01) G07F 7/00 (2006.01) G07F 7/02 (2006.01) G07F 7/08 (2006.01) G07B 15/00 (2006.01)

Patent

CA 2263331

The invention provides an efficient way to store multiple tickets on smart cards. According to the present invention, a ticket (20) comprises a validation count field (26) for registering by way of a validation count the number of times the ticket may be used. Preferably, the validation count is lowered each time the ticket is validated, the validation being effected by writing validation data in the validation field (22) of the ticket. In this way a single ticket can thus be used as a multiple ticket, thus saving memory space. The validation count is also effective in limiting the number of tickets validated, thus limiting the extend of possible fraud.

L'invention concerne un moyen efficace de stocker plusieurs tickets sur des cartes à puce. Selon la présente invention, un ticket (20) comprend un champ de compte des validations (26), destiné à enregistrer au moyen d'un compte des validations le nombre de fois où l'on peut utiliser le ticket. De préférence, le compte des validations est diminué à chaque validation du ticket, laquelle s'effectue par écriture des données de validation dans le champ de validation (22) du ticket. De cette manière, on peut utiliser un seul ticket comme un ticket multiple, économisant ainsi de l'espace mémoire. Le compte des validations peut également servir à limiter le nombre de tickets validés, limitant ainsi l'étendue d'une éventuelle fraude.

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