The present disclosure provides in various aspects for a prelam body of a smart card, a method of forming a prelam body of a smart card, and a smart card having a card body with such a prelam body. According to some embodiments herein, a prelam body of a smart card comprises a prelam body substrate having an IC landing area provided on a first main surface of the prelam body substrate, the IC landing area having at least one contact pad and at least one dummy island, wherein the at least one contact pad is electrically coupled with at least one conductive line routed in or on the prelam body substrate, and a chip having at least one contact element arranged on a second main surface of the chip, wherein the at least one contact element is in electric connection with the at least one contact pad. The chip is flip-chip bonded to the prelam body substrate such that the first main surface and the second main surface face each other and that the chip at least partially overlies the at least one contact pad. Herein, the at least one dummy island and the at least one contact pad each represent a support for the chip on the prelam body substrate.

Consistent with disclosed embodiments, systems, methods, and computer readable media for unassisted purchasing of wirelessly tagged products in a retail establishment may be provided. Embodiments may include at least one processor configured to receive from a mobile communications device, scanned data of a printed code associated with a particular item to be purchased; access a data structure linking wireless tags with associated items available for purchase in the retail establishment, the printed code being linked to a particular wireless tag; cause generation of a trigger signal for triggering the particular wireless tag to transmit a responsive identification signal; receive the transmitted identification signal from the particular wireless tag; determine, based on the received identification signal, an identity of the particular wireless tag; and process a sale of the particular item by updating the data structure to account for removal of the particular item from an inventory.

Consistent with disclosed embodiments, systems, methods, and computer readable media for presence accuracy enhancement in a wireless tag tracking environment may be provided. Embodiments may include at least one processor configured to receive in a first time period, first identification transmissions from a first set of wireless tags; determine locations of the first set of wireless tags based on the first identification transmissions; receive in a second time period second identification transmissions from a second set of wireless tags; determine locations of the second set of wireless tags based on the second identification transmissions; determine, based on a difference between the first and second identification transmissions, a cessation of reception of a missing wireless tag; determine a likelihood that the missing wireless tag remains present at a location thereof during the first time period; and adjust an inventory based on the determined likelihood.

Consistent with disclosed embodiments, systems, methods, and computer readable media for detecting human foot traffic may be provided. Embodiments may include at least one processor configured to receive, during a first period of limited traffic activity, first signals transmitted from wireless tags to receivers within an establishment; determine, based on the first signals, baseline signal characteristics for at least one location within the establishment; receive, during a second period of increased traffic activity, second signals transmitted from the wireless tags to the receivers within the establishment; determine, based on the second signals, signal characteristics for the at least one location during the second period; compare the baseline signal characteristics to the signal characteristics during the second period to determine deviations from the baseline signal characteristics in the at least one location; and based on the deviations, estimate a level of traffic activity in each location.

Consistent with disclosed embodiments, systems, methods, and computer readable media for electronically tracking conversion scores of wirelessly tagged products may be provided. Embodiments may include at least one processor configured to access a retail establishment layout having at least one location designated as a fitting room; receive via at least one wireless receiver, wireless signals from a plurality of wireless tags attached to associated products; access a data structure linking each product with a wireless tag and a product family; determine, based on the wireless signals, each product that is newly in the fitting room; for each product newly in the fitting room, increase an engagement count for the associated product family; for each product family, receive an indication of each sale and increase a sale count for the product family; and calculate, from the engagement count and the sale count, a conversion score for each product family.

Radio frequency identification (RFID) tags are described that include a substrate, an antenna disposed on a major surface of the substrate, an integrated circuit (IC) disposed on a major surface of the substrate, and one or more stand-alone capacitors disposed on a major surface of the substrate. The antenna may have a length less than about 2 meters between first and second ends of the antenna. The integrated circuit may have an effective capacitance less than about 1000 pF and the one or more stand-alone capacitors may have an equivalent capacitance greater than 500 pF and may be connected in parallel with the antenna and the IC.

A Non-transferable Radio Frequency Identification (RFID) assembly for attachment to an article comprises a RFID module; and a antenna module coupled with the RFID module, the antenna module comprising a conductive layer, a substrate, and an adhesive modification layer between the conductive layer and the substrate, the adhesive modification layer configured such that when the assembly is attached to the article and attempt to remove the assembly will cause the substrate to release and leave the conductive layer intact.

A device for wirelessly transmitting and receiving data of an RFID tag introduced in an electromagnetically shielded housing, wherein a transmission region is provided in the housing wall of the housing and wherein a transceiver is connected to the RFID tag. The transceiver is configured to transmit and/or receive data from the RFID tag through the transmission region, wherein a double coil formed by two coil assemblies is provided directly above or below the transmission region for coupling to an external receiving unit of a reading device and for coupling to the transceiver.

A capacitive coupling enhanced (CCE) transponder chip module (TCM) comprises an RFID chip (CM, IC), optionally contact pads (CP), a module antenna (MA), and a coupling frame (CF), all on a common substrate or module tape (MT). The coupling frame (CF, 320A) may be in the form of a ring, having an inner edge (IE), an outer edge IE, 324) and a central opening (OP), disposed closely adjacent to and surrounding the module antenna (MA). A slit (S) may extend from the inner edge (IE) to the outer edge (OE) of the coupling frame (CF) so that the coupling frame (CF) is “open loop”. An RFID device may comprise a transponder chip module (TCM) having a module antenna (MA), a device substrate (DS), and an antenna structure (AS) disposed on the device substrate (DS) and connected with the module antenna (MA). A portion of a conductive layer (CL, 904) remaining after etching a module antenna (MA) may be segmented to have several smaller isolated conductive structures.

Smartcards with metal layers manufactured according to various techniques disclosed herein. One or more metal layers of a smartcard stackup may be provided with slits overlapping at least a portion of a module antenna in an associated transponder chip module disposed in the smartcard so that the metal layer functions as a coupling frame. One or more metal layers may be pre-laminated with plastic layers to form a metal core or clad subassembly for a smartcard, and outer printed and/or overlay plastic layers may be laminated to the front and/or back of the metal core. Front and back overlays may be provided. Various constructions of and manufacturing techniques (including temperature, time, and pressure regimes for laminating) for smartcards are disclosed herein.