| 摘要 |
The present invention relates to a credit card transaction method using a smartphone, which does not use a credit card sales slip. More particularly, the present invention relates to a credit card transaction method in which credit card authorization information is transmitted to the smartphone of a user when the user uses a credit card, signature data is transmitted to a credit card company to obtain normal authorization when the user enters a signature to the smartphone to which the authorization has been transmitted, and a slip is transmitted to the smartphone from the store in which the payment is being performed by the credit card, thus normally performing a credit card transaction without a credit card sales slip. The credit card transaction method of the present invention comprises an authorization request step, a preliminary authorization transmitting step, a signing step, a signature transmitting step, a signature comparing step, and a slip transmitting step. According to the present invention, a printed sales slip is not used in order to save resources, a credit card company server checks whether or not a signature corresponds to the registered signature information instead of determining authorization by means of only a telephone number, to thereby enable accurate user authentication and thus enable the safe use of a credit card. Further, information on the credit card usage of the user is recorded on his/her smartphone, thus enabling the user to manage his/her usage at the same time. |
