Patent ID: 6904520

Claim:
A method enabling the gamblers ( 11 ) of a virtual casino to access, securely and rapidly, by mean of a microphone ( 17 ) linked to a communication network ( 15 ), the different games the virtual casino ( 12 ) offers to its gamblers ( 11 ), said method comprising the following steps: the virtual casino ( 12 ) supplies to each of its gamblers ( 11 ) a credit-card sized card ( 10 ), customized with specific identifiers for each card and each gambler, said card ( 10 ) issues short ID audio signals, of DTMF type, encrypted at least partially, varying for each transaction, when it is activated through element ( 14 ) by the gambler ( 11 ), said card ( 10 ): further counts ( 105 ) the number of times C(p,n) ( 242 ) it is activated by the element ( 14 ) and issues said ID audio signals ( 20 ), wherein C(p,n) takes account of all activations, including activations at a wrong time, issues audio signals ( 20 ) representative of the number of times C(p,n) ( 242 ) it has been activated, encrypts ( 103 ) the ID audio signals ( 20 ) into a function S(p,n) as a function of said number of times C(p,n) ( 242 ) the said card has issued said ID audio signals and as a function of said specific identifiers of each card and each gambler, said ID audio signals are received through the microphone ( 17 ) and transmitted via the communication network ( 15 ) to the computer facility ( 18 ) of the virtual casino, the signals transmitted to the computer facility ( 18 ) and the specific identifiers of the gambler and the card, held by the computer facility ( 18 ), are processed ( 24 ) and compared ( 25 ) electronically by the computer facility ( 18 ) of the virtual casino ( 12 ), by computer means ( 21 ) which: store ( 230 ) the number of times C(p,m) ( 246 ) the card has been used at a time of a last validation operation, compare ( 245 ) the number of times C(p,n) ( 242 ) the card has been activated, at the time of the current transaction, to the number of times stored C(p,m) ( 246 ), reject the current transaction if C(p,n) ( 242 ) is less than or equal to C(p,m) ( 246 ) and continue with the verification of the current transaction if C(p,n) ( 242 ) is greater than C(p,m) ( 246 ), recalculate ( 239 ) the ID audio signals ( 20 ) into a function S′(p,n) as a function of said number of times C(p,n) ( 242 ) that said card has issued said ID audio signals ( 20 ) and as a function of said specific identifies of each card and each gambler, then compare S′(p,n) to S(p,n), so that in case of a match, the games of the virtual casino are immediately accessible to the gambler.