Method and device for the management of transactions using microchip cards
First Claim
1. A method for the management of transactions in a system, said system including card readers and microcircuit cards associated with said card readers, users of said microcircuit cards being recognised by said system by means of confidential user codes, wherein said method comprises the following steps:
- designing a memory space in a microcircuit of said microcircuit cards for the recording of a transactions,organizing, within said memory space, at least a first zone that is accessible for recording said transactions without a systematic presenting of the user code,designing in said at least first zone recording spaces devoted each for the recording of one of said transactions,writing opening bits, in a first state, for opening a predetermined number N of said recording spaces thus allowing the recording of N transactions in said open recording spaces, N being greater than or equal to 2, said opening bits being associated with said recording spaces,recording an actual transaction in an open recording space while changing the state of the opening bits associated with the corresponding recording space, as and when available opening bits exist,presenting a user code by a user, when there is no more available opening bits, in order to write a new set of opening bits associated with N other designed recording spaces in order to open said N other recording spaces.
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Accused Products
Abstract
The method for the management of transactions in a system including card readers and the associated microcircuit cards consists in organizing the memory of the cards, designed for the recording of the transactions, in two zones, one zone that is accessible through the presenting of the bearer code at each transaction, for the transactions involving sums above a predetermined value, the other zone being accessible for the transactions involving sums that are below the predetermined value, without any systematic presenting of the bearer'"'"'s code: a presenting of the bearer'"'"'s code commands the writing of opening bits of recording spaces in this second zone until the number of open spaces is equal to N which is a predetermined value. The disclosed method can be applied, notably, to credit cards, telephone cards and multiple-use cards.
43 Citations
9 Claims
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1. A method for the management of transactions in a system, said system including card readers and microcircuit cards associated with said card readers, users of said microcircuit cards being recognised by said system by means of confidential user codes, wherein said method comprises the following steps:
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designing a memory space in a microcircuit of said microcircuit cards for the recording of a transactions, organizing, within said memory space, at least a first zone that is accessible for recording said transactions without a systematic presenting of the user code, designing in said at least first zone recording spaces devoted each for the recording of one of said transactions, writing opening bits, in a first state, for opening a predetermined number N of said recording spaces thus allowing the recording of N transactions in said open recording spaces, N being greater than or equal to 2, said opening bits being associated with said recording spaces, recording an actual transaction in an open recording space while changing the state of the opening bits associated with the corresponding recording space, as and when available opening bits exist, presenting a user code by a user, when there is no more available opening bits, in order to write a new set of opening bits associated with N other designed recording spaces in order to open said N other recording spaces. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for the management of transactions in a system, said system including card readers and microcircuit cards associated with said card readers, users of said microcircuit cards being recognised by said system by means of confidential user codes, wherein said method comprises the following steps:
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designing a memory space in said microcircuit of said microcircuit cards for the recording of said transactions, organizing, within said memory space, at least a first zone that is accessible for recording said transactions without systematic presenting of the user code, designing in said at least first zone a recording space devoted for the recording of an actual transaction, drawing of lots, presenting the user code by a user being made necessary according to a result of said drawing of lots. - View Dependent Claims (9)
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Specification