A NFC object reader's NFC antenna system configured to dynamically change an element of the NFC antenna system to maintain the NFC antenna system's antenna default resonant frequency. The NFC antenna system can be configured to include a tuning subsystem, integrated with sensors to trigger tuning of NFC antenna system's antenna.

An information reading apparatus is provided. The information reading apparatus enables stable contactless communication with a contactless communication medium even when the apparatus includes a display device for displaying information associated with reading results, in addition to an information reading device and a contactless communication device. The information stored in the contactless communication medium held over a reading surface is read by the contactless communication device according to transmission/reception of electromagnetic waves via an antenna. The reading surface includes a reading port on the inside of the antenna in plan view of the reading surface, and includes a mark arranged not to overlap the antenna.

A payment system, comprising: a receipt apparatus; a payment apparatus, the payment apparatus being connected to the receipt apparatus by means of electromagnetic induction, such that the receipt apparatus can receive information about the payment apparatus; and an identity recognition apparatus, the identity recognition apparatus being disposed in a payment environment and separated from the payment apparatus spatially, and the identity recognition apparatus being in signal connection with the receipt apparatus, wherein when a payer pays money, the identity recognition apparatus is used for recognising identity information about the payer, wherein the payment environment is a place where the receipt apparatus and the payment apparatus are located simultaneously. The payment system ensures the safety, convenience and efficiency of payment. Also provided are a payment device and a payment method.

To promote ease of use, as well as a reduction in bit error rates during extended data exchange between a coupled NFC tag/reader pair, signal strength is measured from a plurality of NFC tag antennas each positioned differently with respect to a common reader field, and differences in signal strength are used to determine an optimum positioning of the tag, or tag emulator, with respect to the reader. Alternative embodiments may include signal time of flight for determining orientation of the NFC antennas within the reader field. Information is generated by the tag, or tag emulator, and output by the tag, or tag emulator, such that a user may direct the positioning of the tag, or tag emulator, for improved communication with the reader.

The person monitoring system is a proximity surveillance system. The person monitoring system comprises an interrogator, a tag, and an accessory. A communication link is established between the interrogator and the tag at predetermined, but not necessarily regular, intervals to ensure that the tag is in the proximity of the interrogator. The tag is attached to an accessory. The person monitoring system is adapted for use with a first person and a second person. The first person carries the interrogator. The second person wears the accessory with the tag. Should the communication link fail to be established, the interrogator initiates an alarm informing the first person that the second person is no longer nearby.

The present invention discloses a type of integrated system and application method for dual-frequency multi-protocol multifunctional near field communication. A first inductive antenna is connected to a high-frequency NFC card-reader chip; the high-frequency NFC card-reader chip reads information of a high-frequency NFC tag, and the information of the high-frequency NFC tag is transmitted to a smart terminal by an ARM main-control chip through a Bluetooth module; the information of the high-frequency NFC tag at the smart terminal is transmitted to the ARM main-control chip through the Bluetooth module, is also transmitted to a dual-interface smart-card chip, and by matching with a second inductive antenna, is emulated into a high-frequency NFC tag; information of a low-frequency tag is read by a low-frequency card-reader chip and a third inductive antenna, and is transmitted to the smart terminal by the ARM main-control chip through the Bluetooth module; a low-frequency card-emulation control module, the ARM main-control chip and the third inductive antenna achieve functions of low-frequency inductive cards, deploying low-frequency inductive cards under any formats and protocols. The integrated system and application method covers high/low-frequency RFID applications, extends the NFC application functions, facilitates switching between the card-reader mode and the card mode, and improves quality of experience with NFC application functions.

A RFID (Radio Frequency Identification) system is provided, comprising at least one tag assembly having at least one tag inductance element that is operatively coupled to an integrated circuit (IC). The RFID system further comprises at least one reader assembly having at least one reader inductance element that is configured to operatively and communicatively couple with the tag assembly, and a resonance assembly having at least one first resonance element that is inductively coupleable to the at least one tag inductance element and/or at least one second resonance element that is inductively coupleable to the at least one reader inductance element, and which is adapted to provide coupled magnetic resonance signal transmission between the reader assembly and the tag assembly.

Reading apparatus for objects each bearing at least one RFID tag, said objects being placed in a cassette that can also be furnished with an RFID tag, said system comprising at least one element in the form of a tunnel in which said cassette can be placed, said element comprising at least one antenna and one RFID reader, said antenna comprising at least two coils composed of several turns, said coils being distributed along and around said tunnel.

A chip card reading arrangement is provided including a chip card reading device including a data processing circuit and a reader antenna coupled to the data processing circuit arranged at a surface of the chip card reading device for placing a chip card to communicate with the chip card reading device via the reader antenna. The data processing circuit is configured to process at least one of signals received via the reader antenna and signals to be transmitted via the reader antenna. The chip card reading arrangement further includes an antenna structure including an antenna body, a first antenna and a second antenna coupled to the first antenna and surrounded by the first antenna. The antenna structure is arranged on and fixed to the surface of the chip card reading device such that the reader antenna surrounds the second antenna.

A method includes receiving a series of radio frequency (RF) signals, where, from RF signal to RF signal of the series of RF signals, a carrier frequency is changed in accordance with a frequency hopping pattern. The method further includes, while receiving the series of RF signals, sensing an environmental condition by, for a frequency hop of at least some frequency hops of the frequency hopping pattern, adjusting a characteristic of a wireless sensor to maintain proximal alignment of a resonant frequency of the wireless sensor with the carrier frequency corresponding to a present frequency of the at least some frequency hops and generating a value to represent the adjustment of the characteristic, where a set of values is generated for the at least some frequency hops and where the set of values is used to determine a sensed value of the environmental condition.