Patent ID: 7051929

Claim:
A secure credit card comprising: a card body; a processor embedded within the card body; wherein the processor contains a predetermined program that can generate a correct date and produce at least one new security number per day; and wherein the security number is the function of the date, and the relationship between the security number and the date is defined by the predetermined program; a display window located on one surface of the card body for displaying the correct date and the at least one new security number generated by the processor; a controller located on one surface of the card body for controlling the status of the processor; a power source disposed within the card body for powering the processor; and a program download port for downloading the predetermined program into the processor; wherein a host computer for authorizing the transactions of the secure credit card contains the predetermined program that matches with the card number of the secure credit card; thereby the host computer can compute a security number of the date which is identical to said security number of the date produced by said processor in said secure credit card; and whereby the secure credit card with the at least one security number per day prevents credit card frauds.