An RFIC module is provided that includes a base material having a first surface and a second surface opposite to each other; an RFIC mounted on a first surface side of the base material; a first conductor pattern formed on the first surface of the base material; a first insulator film formed on the first surface of the base material and a surface of the first conductor pattern; a second conductor pattern formed on the first insulator film and the first conductor pattern; and a second insulator film covering a surface side of the base material with respect to the first surface. Moreover, the first and second conductor patterns form a circuit connected between RFIC-side electrodes to which the RFIC is connected and antenna-side electrodes facing an antenna conductor pattern.

A controller of a transaction card may cause the transaction card to be in a first state. The transaction card may include a battery and at least one other component. In the first state, the battery does not provide power to the at least one other component of the transaction card. The transaction card may receive a signal from a near-field communication (NFC) device and may cause the transaction card to be in a second state based on receiving the signal. In the second state, the battery provides power to the at least one other component of the transaction card. The transaction card may perform a transaction based on the transaction card being in the second state.

This disclosure describes techniques for operating an inductive coupling reader. The techniques include operations comprising: applying an excitation frequency to a resonance circuit of the inductive coupling reader; detecting a change to a resonance frequency of the resonance circuit of the inductive coupling reader; and in response to detecting the change to the resonance frequency of the inductive coupling reader, adjusting the excitation frequency being applied to the resonance circuit.

A system may include a fastener having a trench formed in a side of a head of the fastener. The system may further include a magneto-elastic component spanning the trench and attached to the head of the fastener on both sides of the trench. The system may also include a coil wrapped around the magneto-elastic component between both sides of the trench. The system may include a radio frequency identification (RFID) circuit, where the coil may be electrically connected to the RFID circuit resulting in a resonance response frequency that is a function of a strain level applied to the magneto-elastic component.

A transaction device includes a metal layer with one or more discontinuities in the metal layer. Each discontinuity comprises a gap in the metal layer extending from the front surface to the back surface, including at least one discontinuity that defines a path from the device periphery to the opening. A transponder chip module is disposed in the opening. A booster antenna is in communication with the transponder chip module. The device may include at least one fiber-reinforced epoxy laminate material layer. The transponder chip module and the booster antenna may comprise components in a payment circuit, with the metal layer electrically isolated from the payment circuit. The booster antenna may be formed on or embedded in the fiber-reinforced epoxy laminate material layer. Processes for manufacturing transaction devices including a metal layer with one or more fiber-reinforced epoxy laminate material layers are also disclosed.

An electronic book for detecting page codes by using wireless radio-frequency technology comprising a book and a base, the book comprises a plurality of book pages, and each of the book pages is respectively provided with a wireless radio-frequency unit. The base is provided with an antenna coil and a control circuit, the wireless radio-frequency unit of each of the book pages is disposed at a position opposite to an upper side of the antenna coil. A magnetic flux generated by the antenna coil is transmitted to the wireless radio-frequency unit for generating an operating power to provide for a sensor chip. (The sensor chip generates a digital signal which is converted by a central processing unit to generate a page code output command to control and generate a prompt function of the book page correspondingly disposed above a position of the antenna coil.

A transaction card for dual interface communication of a transaction includes a card body, a chip opening, a discontinuity, and a transponder chip. The card body includes a first metal layer having an outer peripheral edge, a first metal face, and a second metal face. The chip opening includes a first chip hole transversely extending from the first metal face toward the second metal face thereby defining a first metal edge surrounding a predetermined hole shape. The discontinuity extends from the outer peripheral edge to the first metal edge. The transponder chip module has a module antenna and is configured to be received within the chip opening. The module antenna defines an outer antenna edge surrounding a predetermined antenna shape such that the predetermined antenna shape is the same as the predetermined hole shape for improved inductive coupling via the discontinuity during use.

A transaction card having an opening in a metal card body, a booster antenna in the opening, and a molding material about the booster antenna. A process for manufacturing the transaction card includes forming an opening in a card body, inserting a booster antenna into the opening, and molding a molding material about the booster antenna.

An electronic book for detecting page codes by using wireless radio-frequency technology comprising a book and a base, the book comprises a plurality of book pages, and each of the book pages is respectively provided with a wireless radio-frequency unit. The base is provided with an antenna coil and a control circuit, the wireless radio-frequency unit of each of the book pages is disposed at a position opposite to an upper side of the antenna coil. A magnetic flux generated by the antenna coil is transmitted to the wireless radio-frequency unit for generating an operating power to provide for a sensor chip. (The sensor chip generates a digital signal which is converted by a central processing unit to generate a page code output command to control and generate a prompt function of the book page correspondingly disposed above a position of the antenna coil.

A controller of a transaction card may cause the transaction card to be in a first state. The transaction card may include a battery and at least one other component. In the first state, the battery does not provide power to the at least one other component of the transaction card. The transaction card may receive a signal from a near-field communication (NFC) device and may cause the transaction card to be in a second state based on receiving the signal. In the second state, the battery provides power to the at least one other component of the transaction card. The transaction card may perform a transaction based on the transaction card being in the second state.