Disclosed is an RFID tag configured to store a plurality of data and selectively provide a predetermined data of the plurality of data to an RFID reader. The RFID tag includes a radio frequency (RF) interface, a memory, an input unit, and a control unit. The RF interface include an antenna for communication with an RFID reader. The memory is configured to store a plurality of data. The input unit is configured to receive a selection for provision data to be provided to the RFID reader among the plurality of data stored in the memory. The control unit is configured to control the selected data to be provided to the RFID reader through the RF interface when a request for data is received from the RFID reader.

Methods and apparatuses for selecting a subset of RFID tags are provided in some embodiments. These methods and apparatuses utilize the susceptibility to light by persistent nodes found in passive tags. Light can be used to intentionally reduce persistence times in a particular subset tags or even an individual tag. Then, persistent nodes can be used as a selection criterion to distinguish previously illuminated tags from non-illuminated tags. In other embodiments, a power circuit receives a RF input source and generates a direct current (DC) output voltage. The circuit includes a bias circuit to supply a gate to source bias, which is independent of the DC output voltage. The circuit further includes a voltage multiplier circuit that is coupled to the bias circuit. The voltage multiplier circuit has MOS transistors with one transistor to receive the gate to source bias.

A method for coordinating reader transmissions according to one embodiment includes, at a first reader, receiving from a second reader a request to transmit to a radio frequency identification tag; and if the first reader is transmitting, sending a denial of the request from the first reader to the second reader. A method for coordinating reader transmissions according to another embodiment includes from a first reader, sending to a plurality of readers a request to transmit to a radio frequency identification tag; waiting for responses from the plurality of readers; if a denial of the request is received by the first reader from any of the readers, not transmitting to the radio frequency identification tag; and if no denial of the request is received by the first reader from any of the readers, transmitting to the radio frequency identification tag. Additional systems, methods and computer program products are presented.

There is described a method of checking whether a transponder device (220) is in proximity of a reader device (210), the method comprising (a) transmitting a first command (331) from the reader device to the transponder device, (b) in response to receiving the first command at the transponder device, transmitting a first response (332) to the reader device, the first response including an expected transponder device response time (pubRespTime) which is stored in a memory (224) of the transponder device, (c) transmitting a second command (333) from the reader device to the transponder device, (d) in response to receiving the second command at the transponder device, transmitting a second response (334) to the reader device, (e) at the reader device, determining the transponder device response time as the difference in time between transmitting the second command and receiving the second response from the transponder device, and (f) determining whether the determined transponder device response time matches the expected transponder device response time included in the first response. There is also described a reader device (210), a transponder device (220), and a contactless communication system (200).

In one embodiment the present invention comprises a smartphone and encoders for commissioning RFID transponders. The present invention further includes novel systems, devices, and methods for commissioning RFID transponders with unique object class instance numbers without requiring a realtime connection to a serialization database.

Systems and methods for identifying a participant providing audible information during a communication session are disclosed. More particularly, speech localization is utilized to determine a location of the participant providing audible information. An identification device determined to be at a location corresponding to the location of the participant providing audible information is identified. The identity of the participant providing the audible information is then obtained by mapping the identification device to the participant. The information identifying the participant providing audible information can be provided to other endpoints of the communication session.

An object detection system includes a reader waveguide (101) formed as an open transmission line, an RFID tag (102) placed above the reader waveguide (101), a signal strength acquisition unit (103) that acquires signal strength of a read signal read from the RFID tag (102) by electromagnetic coupling through the reader waveguide (101), and an object detection unit (104) that detects physical characteristics of an object (105) corresponding to the acquired signal strength based on a relationship between a plurality of (three or more values of) signal strength of the read signal and physical characteristics of the object to be detected.

An RF tag for sending data to a tag reader is described. The tag comprises an antenna to couple to an RF field of the tag reader and first and second resonant circuits, the first comprising a non-linear, adaptive resonator configured to automatically self-tune to a frequency of the RF field, the second a linear resonator. The tag also has a local power store. The tag powers up using the non-linear, adaptive resonator, which can automatically self-tune without an external power supply, and this resonator is used to charge the local power store. Once operational the tag switches to using a linear resonator for communicating with the tag reader.

A security kiosk which allows travelers to process themselves through a security checkpoint. An example security kiosk includes an identification device, communications circuitry, a security scanner for examining a traveler and items accompanying the traveler, and a processor for obtaining identification information from the traveler using the identification device, for connecting to a host computer system using the communications circuitry, for determining whether the traveler has previously checked in from the host computer system, for checking in the traveler when the traveler has not previously checked in, for reading a check-in document when the traveler has previously checked in, and for operating the security scanner.

An NFC device may include a first and second controller interfaces, a first communication channel coupled to the first controller interface, and a second communication channel connected to the second controller interface. A secure element may include a secure element interface connected to the first communication channel and encryption/decryption circuitry configured to encrypt data to be sent on the first communication channel for being framed into the encrypted frames and to decrypt encrypted data extracted from the encrypted frames and received from the first communication channel. The secure element may also include management circuitry configured to control the encryption/decryption circuitry for managing the encrypted communication with the NFC controller. A device host may include a host device interface coupled to the second controller interface and control means or circuitry configured to control the management circuitry through non-encrypted commands exchanged on the first and second communication channels.