The present description concerns an electronic device including: a modulator-demodulator circuit; a first integrated circuit implementing a first subscriber identification module; and at least one second integrated circuit intended to implement a second subscriber identification module, wherein a sequencing terminal of the first circuit and a sequencing terminal of the second circuit are connected to a same sequencing terminal of the modulator-demodulator circuit.

Metal layers (650, 730, 750, 830, 850) of a smartcard (SC, 600, 700, 800) have module openings (614, 712, 714, 812, 814) for receiving a transponder chip module (TCM). Thermosetting resin (TR, 668B, 768A, 768B, 868A, 868B) coats (encapsulates) the bottom surfaces and fills the module openings of the metal layers. A first metal layer (650, 750, 850) may have a slit (S; 620, 720B, 820) which may also be filled by the thermosetting resin. A second metal layer (ML, 730) disposed above the first metal layer (750) may have a slit (S, 720A) which may also be filled by the thermosetting resin. A booster antenna circuit (BAC, 844) may be disposed between the first and second metal layers, with magnetic shielding material (842) disposed between the booster antenna circuit and the second metal layer (730).

Provided are transaction cards with a reduced weight core. In some approaches, a transaction card may include a body having a first outer layer opposite a second outer layer, and a corrugated core between the first outer layer and the second outer layer, wherein the corrugated core comprises a plurality of alternating peaks and valleys coupled to the first outer layer and the second outer layer. The transaction card may further include an identification chip positioned through the first outer layer, wherein the identification chip is directly coupled to the corrugated core.

A card connector, a card holder, and a terminal device, where the card connector includes a plurality of first terminals and one or more second terminals. The first terminals are arranged to form a first card access area that installs a first card, and the first terminals are configured to be electrically coupled to the first card. The one or more second terminals are distributed on a periphery of the first card access area, the first terminals and the one or more second terminals form a second card access area that installs a second card, and the first terminals and the one or more second terminals are configured to be electrically coupled to the second card.

Systems and methods allow for the integrated circuit cards (ICCs) to removably couple to each other and transmit information to an access device as a single device. One among the two or more ICCs coupled together may read data from the remaining ICCs and provide the data to an access device via contactless communication. The ICC may include a substrate; an integrated circuit embedded in the substrate; input ports exposed on a first surface of the substrate, and output ports exposed on a second surface of the substrate. The input ports and the output ports are electrically coupled to the integrated circuit. The output ports are configured to be removably coupled to the input ports of a second ICC.

Connection bridges (CBR) for dual-interface transponder chip modules (TCM) 200 may have an area which is substantially equal to or greater than an area of a contact pad (CP) of a contact pad array (CPA). A given connection bridge may be L-shaped and may comprise (i) a first portion disposed external to the contact pad array and extending parallel to the insertion direction, and (ii) a second portion extending from an end of the first portion perpendicular to the insertion direction to within the contact pad array (CPA) such as between C1 and C5. The connection bridge may extend around a corner of the contact pad array, may be large enough to accommodate wire bonding, and may be integral with a coupling frame (CF) extending around the contact pad array. The transponder chip modules may be integrated into a smart card (SC).

A transaction card, and processes for the manufacture thereof, having a core layer, optionally, one or more layers or coatings over the core layer, and at least one of a magnetic stripe, a machine readable code, and a payment module chip disposed in or on the card and suitable for rendering the card operable for conducting a transaction. The core layer comprises a metal-doped cured epoxy comprised of metal particles distributed in a binder consisting essentially of a cured, polymerized epoxy resin, the core comprising greater than 50%, preferably greater than 75%, and more preferably greater than 90%, of the weight and/or volume of the card. In some embodiments, the core includes a metal insert enveloped with the metal-doped curable epoxy, wherein the periphery of the epoxy extends beyond the periphery of the metal insert and has material properties more conducive to cutting or punching than the metal insert.

Provided is a process for manufacturing a standard chip-card module comprising metallized contacts (P1-P6) defining a graphic design comprising visible parts formed from lines, segments or dots, a first portion (2A, 12A) of which passes right through the thickness of the metallized contacts (P1-P6) and a second portion (2B, 12B) of which is formed only superficially on the upper external surface of the metallized contacts (P1-P6). The second portion (2A, 12A) is produced in the continuity of the first portion, to form said graphic design. Other embodiments directed to a module resulting from the process is disclosed.

Provided are compact transaction cards. In some approaches, a transaction card may include a body having first and second main sides, a first and second end perimeter perimeters, and first and second side perimeters, wherein a first axis extending between the first and second side perimeters defines a first section of the body and a second section of the body. The card may further include an identification chip along the first main side and a magnetic stripe along the second main side, wherein the magnetic stripe extends between the first and second side perimeters, and wherein the magnetic stripe and the identification chip are located on the first section of the body. The card may further include a textured grip along at least one of the first main side and the second main side, wherein the textured grip is positioned only on the second section of the body.

A substrate for a dual interface smartcard, comprising a contact pad module receiving portion; an auxiliary module receiving portion; and a conductor pattern. The conductor pattern includes an antenna coil having a first end and a second end; a first set of connectors arranged in the contact pad module and including a GND connector and a VCC connector for electrical connection with a VCC connector of the contact pad module; a second set of connectors arranged in the auxiliary module receiving portion and including a GND connector and a VCC connector; and leads connecting connectors in the first set with connectors in the second set. One of the GND connector and the VCC connector in the first set of connectors is conductively connected to one of the first end and the second end of the antenna coil.