Shielded Contactless Electronic Document

• US 20070205953A1
• Filed: 04/01/2005
• Published: 09/06/2007
• Est. Priority Date: 06/16/2004
• Status: Active Grant

• Current Assignee: Axalto SA (Thales SA)
• Original Assignee: Axalto SA (Thales SA)
• Inventors: Reignoux, Yves, Krishna, Ksheerabdhi, Cheramy, Severine, Bombay, Bart, Groeninck, Denis, Leibenguth, Joseph, Lafon, Jean-Pierre, Pattinson, Neville
• Granted Patent: US 7,701,408 B2
• Time in Patent Office: Days
• US Class Current: 343/841
• CPC Class Codes: B42D 25/24 Passports
• CPC Class Codes: G06K 19/025 the material being flexible or adapted for folding, e.g. paper or paper-like materials used in luggage labels, identification tags, forms or identification documents carrying RFIDs methods for testing the genuineness of valuable papers, e.g. banknotes or passports G07D7/00; constructional features of booklets and the like B42D
• CPC Class Codes: G06K 19/073 Special arrangements for circuits, e.g. for protecting identification code in memory protection against unauthorised use of computer memory G06F12/14
• CPC Class Codes: G06K 19/07327 Passive means, e.g. Faraday cages Faraday-type protection of electric circuits in general H05K9/00
• CPC Class Codes: G06K 19/07372 by detecting tampering with the circuit
• CPC Class Codes: G06K 19/07381 with deactivation or otherwise incapacitation of at least a part of the circuit upon detected tampering
• CPC Class Codes: G06K 19/07722 the record carrier being multilayered, e.g. laminated sheets flat articles in general, see B32B37/00
• CPC Class Codes: G06K 19/07745 Mounting details of integrated circuit chips
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01Q 1/2208 associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems methods or arrangements for sensing record carriers, e.g. for reading patterns G06K7/00; record carrier for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: H01Q 1/526 Electromagnetic shields
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H04K 2203/20 for contactless carriers, e.g. RFID carriers
• CPC Class Codes: H04K 3/68 using passive jamming, e.g. by shielding or reflection shielding of apparatus or components against electric or magnetic field H05K9/00
• CPC Class Codes: H04K 3/86 related to preventing deceptive jamming or unauthorized interrogation or access, e.g. WLAN access or RFID reading record carriers with integrated circuit chips including means for preventing undesired reading or writing from or to record carriers by hindering electromagnetic reading or writing G06K19/07318; arrangements for sensing record carriers including arrangements for protecting the interrogation against piracy attacks G06K7/10257

Abstract

A document which includes a cover, one or more internal pages, a radiofrequency microcontroller, an antenna electrically connected to the radiofrequency microcontroller, an electromagnetic shield capable of partially disrupting wireless communication with the radiofrequency microcontroller when the document is closed, and not disrupting the wireless communication when the document is opened is described. The electromagnetic shield included in the document is implemented using metal, conductive plastic, conductive ink or magnetic ink.

Claims

1. A document comprising:

a cover;

at least one internal page;

a radiofrequency microcontroller;

an antenna electrically connected to said radiofrequency microcontroller;

an electromagnetic shield capable of disrupting, at least partially, a wireless communication with said radiofrequency microcontroller when the document is closed, and not disrupting the wireless communication when the document is opened,

wherein the electromagnetic shield is implemented using at least one selected from a group consisting of metal, conductive plastic, conductive ink and magnetic ink.

3. The document of claim 1, wherein the electromagnetic shield is incorporated to a first cover part of the document.

4. The document of claim 3, wherein the antenna is incorporated to a second cover part of the document.

5. The document of claim 4, wherein the first and the second cover parts of the document are opposite cover parts.

6. The document of claim 1, wherein the electromagnetic shield is applied to the at least one internal page.

8. The document of claim 1, wherein the electromagnetic shield is a wire grid.

9. The document of claim 8, wherein an inter-wire average distance of the wire grid is substantially smaller than a radio-frequency wavelength and a size of the antenna.

10. The document of claim 9, wherein the inter-wire average distance is less than approximately 40 mm.

11. The document of claim 1, wherein the electromagnetic shield is an approximate mirror image of the antenna.

13. The document of claim 1, wherein a conductance of the electromagnetic shield is greater than a conductance of the antenna.

14. The document of claim 1, wherein the document is an identification document.

15. The document of claim 14, wherein the identification document is a passport.

16. The document of claim 1, wherein the electromagnetic shield is a conductive wire cloth.

17. The document of claim 3, wherein the electromagnetic shield is a wire grid.

18. The document of claim 4, wherein the electromagnetic shield is a wire grid.

19. The document of claim 5, wherein the electromagnetic shield is a wire grid.

20. The document of claim 6, wherein the electromagnetic shield is a wire grid.

21. The document of claim 1, wherein the magnetic ink is applied by using one selected from a group consisting of printing and using a stamp.

22. The document of claim 1, wherein the conductive ink and the conductive plastic is applied by using one selected from a group consisting of printing, spraying, electrolysis, sputtering, and precipitation.

23. The document of claim 1, wherein implementing the electromagnetic shield using metal comprises using a foil of the metal.

2. (canceled)

7. (canceled)

12. (canceled)