System and method for issuing and verifying electronic coupon
A shopping coupon and electronic technology, applied in marketing, equipment, cash register, etc., can solve the problems of increased use and labor costs, error-prone, long operation time, etc., achieve a safe and fast online shopping environment, improve security and Convenience, labor and hardware cost savings
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[0024] Before explaining the specific implementation of the present invention, the pre-authorization and verification process of the traditional bank point of sale terminal (Point Of Sale, hereinafter referred to as POS machine) will be explained. The pre-authorization process of the traditional bank POS machine includes: the user swipes the bank card on the POS machine provided by the bank to perform "pre-authorization" transactions; the bank POS machine prints out the transaction receipt with the pre-authorization code for this transaction; then the user signs Confirm; finally, the user's funds are frozen and the pre-authorization is successful. The pre-authorization code confirmation process of the traditional bank POS machine includes: the user obtains the pre-authorization code and completes the "pre-authorization completed" transaction; the user swipes the bank card on the POS machine and enters the pre-authorization code for this transaction; checks whether the pre-autho...
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