ANTI-COUNTERFEITING LABEL FOR DETECTING CORK ALTERATIONS

• US 20170183135A1
• Filed: 05/18/2015
• Published: 06/29/2017
• Est. Priority Date: 05/21/2014
• Status: Abandoned Application

• Current Assignee: WISeKey Semiconductors
• Original Assignee: WISeKey Semiconductors
• Inventors: PIC, Pierre, ENGUENT, Jean-Pierre, DUBREUCQ, Mikal, BOIRON, Ghislain
• Application Number:
  US15/312,806
• Publication Number:
  US 20170183135A1
• Time in Patent Office: Days
• CPC Class Codes: B65D 1/023 Neck construction
• CPC Class Codes: B65D 2203/10 Transponders
• CPC Class Codes: B65D 2539/008 with coatings or coverings
• CPC Class Codes: B65D 2555/02 Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
• CPC Class Codes: B65D 39/0011 from natural or synthetic cork, e.g. for wine bottles or the like
• CPC Class Codes: B65D 39/0058 from natural or synthetic cork, e.g. for wine bottles or the like
• CPC Class Codes: B65D 55/028 initial opening or unauthorised access being indicated by the presence or absence of an audible or electrical signal
• CPC Class Codes: B65D 55/06 Deformable or tearable wires, strings, or strips containers specially constructed to be opened by tear-strips, strings or the like B65D17/00; caps or cap-like closures with tear-strips B65D41/32; Use of seals , e.g. destructible locking pins B65D55/022 takes precedence
• CPC Class Codes: G06K 19/07 with integrated circuit chips
• 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 19/0739 the incapacitated circuit being part of an antenna
• CPC Class Codes: G06K 19/07798 part of the antenna or the integrated circuit being adapted for rupturing or breaking, e.g. record carriers functioning as sealing devices for detecting not-authenticated opening of containers electronic seals G09F3/03
• CPC Class Codes: G08B 13/2431 Tag circuit details
• CPC Class Codes: H04B 5/77 for interrogation
• CPC Class Codes: H04L 9/32 including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials

Abstract

A near field magnetically coupled contactless device, comprises a foldable substrate in the form of a tape; an antenna circuit tuned to a nominal frequency, including an antenna and a capacitor connected to the antenna; a sacrificial impedance connected to the antenna circuit to contribute to the tuning of the antenna circuit to the nominal frequency; and a sacrificial structure comprising a conductive track connecting the sacrificial impedance to the antenna circuit, configured in meanders occupying a region of interest of the substrate such that a piercing of the region of interest severs the conductive track.

Claims

1. A contactless device comprising:

a foldable substrate in the form of a tape;

an antenna circuit tuned to a nominal frequency, including an antenna and a capacitor connected to the antenna;

a sacrificial impedance connected to the antenna circuit to contribute to the tuning of the antenna circuit to the nominal frequency; and

a sacrificial structure comprising a conductive track connecting the sacrificial impedance to the antenna circuit, configured in meanders occupying a region of interest of the substrate such that a piercing of the region of interest severs the conductive track.

2. The device of claim 1, wherein the sacrificial impedance is connected in parallel with the antenna.

3. The device of claim 1, wherein the antenna encircles the region of interest.

4. The device of claim 1, comprising a control microcircuit connected to be powered by the antenna circuit, and including information transmission functions and cryptographic functions;

wherein the antenna circuit tuning parameters are selected so that a suppression of the sacrificial impedance lowers the supply power received by the microcircuit to a level insufficient for supplying the cryptographic functions, yet sufficient for supplying the transmission functions.

5. The device of claim 1, comprising a conductive track for connecting the sacrificial impedance to the antenna circuit, configured to cross areas of preferential rupture of the tape.

6. A container comprising:

a cork; and

a contactless device according to claim 5 adhesively secured over the container and the cork so that the region of interest of the substrate is in correspondence with the cork.

7. The container of claim 6 in the form of a bottle comprising a cap enveloping the cork, the neck of the bottle, and the tape, the cap including, in the vicinity of the cork, a material permeable to magnetic field.