Secure credit card having daily changed security number

• US 7,051,929 B2
• Filed: 10/18/2004
• Issued: 05/30/2006
• Est. Priority Date: 10/18/2004
• Status: Expired due to Fees

• Current Assignee: Gongling Li
• Original Assignee: Gongling Li
• Inventors: Li, Gongling
• Primary Examiner(s): Lee, Michael G.
• Assistant Examiner(s): Haupt, Kristy A.
• Application Number:
  US10/965,803
• Publication Number:
  US 20060081700A1
• Time in Patent Office: 589 Days
• Field of Search: 235/492, 235/380, 340/5.42
• US Class Current: 235/380
• CPC Class Codes: G06K 19/07 with integrated circuit chips
• CPC Class Codes: G06K 19/07703 the interface being visual
• CPC Class Codes: G06K 19/10 at least one kind of marking being used for authentication, e.g. of credit or identity cards verification of coded identity or credit cards in mechanisms actuated by them G07F7/12
• CPC Class Codes: G06K 19/14 the marking being sensed by radiation
• CPC Class Codes: G06Q 20/346 Cards serving only as information carrier of service
• CPC Class Codes: G06Q 20/347 Passive cards
• CPC Class Codes: G07F 7/10 together with a coded signal , e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
• CPC Class Codes: G07F 7/1075 PIN is checked remotely

Abstract

A secure credit card having daily changing security number is disclosed. The upper half portion of the secure credit card has a magnet strip and its thickness is same as a normal credit card, so it can be read by a credit-card reader. The bottom half portion of the secure credit card contains a processor, key or keypad, battery, display window and a program download port. The processor is loaded with a predetermined program so that the processor can generate date and a daily renewed security number that can be shown on the display window. The security number is the function of the date and their relationship is defined by the predetermined program. Giving a date, a corresponding security number can be generated by this predetermined program. The computer of the credit card company keeps this predetermined program and can compute the security number of the date by this predetermined program. The security number of the date computed by the credit card company is identical to the security number of the date shown on the display window of the secure credit card. So that the valid of the credit card and its transaction can be verified by the credit card company based on the cardholder'"'"'s name, card number and the security number of the date. With this secure credit card, the credit card payment becomes very secure even through internet.

Claims

1. 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.

2. A secure credit card according to claim 1 wherein said power source is a battery.

3. A secure credit card according to claim 1 wherein said controller is a key.

4. A secure credit card according to claim 1 wherein said controller is a keypad.

5. A secure credit card according to claim 1 wherein display window is a LCD (Liquid Crystal Display) window.

6. A secure credit card according to claim 1 wherein said card body has two portions, upper half portion and bottom half portion,

said upper half portion has the same thickness as a normal credit card, and there is a magnetic strip on said upper half portion,

said bottom half portion contains with said processor, display window, power source, controller and said program download port.

7. A secure credit card according to claim 1 wherein said processor, display window, program download port, controller and power supply can be integrated into one element or two elements.