Method for preventing the falsification of access cards

• US 20030131254A1
• Filed: 01/04/2002
• Published: 07/10/2003
• Est. Priority Date: 01/04/2002
• Status: Abandoned Application

• Current Assignee: Scheidt & Bachmann GmbH
• Original Assignee: Scheidt & Bachmann GmbH
• Inventors: Noll, Elmar, Miller, Norbert
• Application Number:
  US10/037,662
• Publication Number:
  US 20030131254A1
• Time in Patent Office: Days
• US Class Current: 713/200
• CPC Class Codes: G06K 19/06028 using bar codes
• CPC Class Codes: G06Q 20/347 Passive cards
• CPC Class Codes: G07B 15/00 Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points handling coins or valuable papers, e.g. banknotes, G07D; apparatus for vending or hiring articles or services activated by coins, credit cards, paper currency or the like G07F7/00, G07F17/00
• CPC Class Codes: G07F 7/08 by coded identity card or credit card or other personal identification means without personal verification means G07F7/02
• CPC Class Codes: G07F 7/125 Offline card verification

Abstract

In order to make available a method for preventing the falsification of access cards as well as an identification card which provides the greatest possible control opportunity and comprehensive protection from forgery at low cost and with little technical effort, a method for preventing the falsification of access cards (which contain plain text information that identifies the type of authorization) is proposed, wherein the plain text information is encoded by using a key, and the resulting code is applied to the access card.

Claims

1. Method for preventing the falsification of access cards containing plain text information that identifies the type of authorization, whereby the plain text information is encoded by applying a key and the resulting code is introduced onto the access card.

2. Method pursuant to claim 1, characterized in that the code is applied with an imprinting process.

3. Method pursuant to one of the previous claims, characterized in that the code is made machine-readable.

4. Method pursuant to one of the previous claims, characterized in that the code can be converted back into plain text information by using the key.

5. Method pursuant to one of the previous claims, characterized in that the code can be reproduced.

6. Method pursuant to one of the previous claims, characterized in that, with the help of a computer the agreement of the plain text information with the code can be checked a key stored in the computer.

7. Method pursuant to claim 6, characterized in that the respectively different keys are selected as a function of features of the respective access card.

8. Method according to claim 6 or claim 7, characterized in that a secret key is used.

9. Identification card with plain text information identifying the type of authorization, characterized in that it contains a code that can be determined from the plain text information by using a key.

10. Identification card pursuant to claim 9, characterized in that it contains an imprinted code.

11. Identification card pursuant to one of the claims 9 or 10, characterized in that it contains a machine-readable code.