Wisekey Semiconductors

Inside Secure

Pierre Pic

Ghislain Boiron

Jean-Pierre Enguent

Bruno Charrat

Tania Guidet

Mikaël Dubreucq

The invention relates to a near field magnetically coupled contactless tag, comprising a substrate comprising a rupture zone; a master microcircuit arranged on the substrate on one side of the rupture zone, and configured to be interrogated by a near-field reader; a slave microcircuit arranged on the substrate on the other side of the rupture zone; and a sacrificial link connecting the two microcircuits, wherein the two microcircuits are configured to negotiate mutual authentication through the sacrificial link.

Anti-counterfeit label having increased security

An NFC tag includes a foldable substrate in the form of a tape; an antenna located at a first end of the tape; a capacitor connected to the antenna, located at the first end of the tape; an impedance, in particular a capacitor, located at a second end of the tape; and conductive tracks running along the tape to connect the impedance to the antenna.

Dual-mode anti-counterfeiting tag

A near field magnetically coupled anti-counterfeiting tag comprises a control microcircuit configured to implement a basic function and a cryptographic function; a sacrificial conductive track located across a sacrificial area of the tag; and a circuit for detecting continuity of the sacrificial track, cooperating with the microcircuit to implement the basic function without implementing the cryptographic function when the sacrificial track is broken.

Anti-counterfeiting label preserving functionality after use

The present invention relates to a method for manufacturing a microcircuit card, including steps of: forming a first antenna coil in a card, the first antenna coil having a part following the edge of the card, forming a module having a microcircuit and a second antenna coil around and connected to the microcircuit, and implanting the module into the card at a precise position in relation to the edge of the card, the first antenna coil being coupled by induction to the second antenna coil, the first antenna coil being pre-formed in such a way that only one part of the second antenna coil is at a distance from the first antenna coil of less than 5% of the width of the second antenna coil.

Antenna system for contactless microcircuit

The invention relates to a method for manufacturing a contactless microcircuit antenna coil, including steps of: depositing a first electrically conducting layer on a first face of a wafer, and forming in the first layer an antenna coil in a spiral having several turns, including an internal turn coupled to an internal contact pad and an external turn coupled to an external contact pad, the external turn following the entire contour of antenna coil except for a zone through which a conducting path coupling the external contact pad to the external turn can pass, the external and internal contact pads of the antenna coil being formed in a central zone of the external turn, the antenna coil having a bypass zone in which each turn bypasses the external contact pad.

Growing community of inventors

Ceyreste, France

Pierre Pic