Patent ID: 8468100
Filing Date: 2013-06-18
Classification: G06Q,H04L

Abstract:
1. A computer program product comprising computer executable instructions, stored on a non-transitory computer readable medium, for carrying out managing electronic vouchers which a user may submit to a merchant in exchange for goods or services, the computer-executable instructions comprising instructions for carrying out the machine implemented steps of: issuing, by an issuer, a series of electronic vouchers to a user, the issuer computing, for each electronic voucher of the series, an electronic signature based upon the electronic voucher, the electronic signature being provided to the user; receiving, by the issuer, an electronic declaration from the user; computing, by the issuer, whether the electronic declaration comprises an electronic signature by the merchant, of a most recently issued one of the series of electronic vouchers; and issuing, by the issuer, a succeeding one of the series of electronic vouchers that follows the most recently issued one of the series of electronic vouchers only if the electronic declaration comprises said electronic signature by the merchant for the most recently issued one of the series of electronic vouchers.