An absorbent article has one or more fluid filter layers to inhibit electrode traces from being exposed to low volumes of fluid to reduce the number of false positives that are indicated by an RFID tag of the incontinence detection pad. An antenna inlay has a sacrificial trace portion to permit testing for proper operation of an RFID chip electrically coupled to the antenna inlay. After testing, the sacrificial trace portion is severed. A fluid barrier layer blocks fluid from reaching portions of electrode traces that are located on a backsheet outside a periphery of an absorbent core of an incontinence detection pad. The power at which an antenna transmits to wirelessly energize a passive RFID tag of an incontinence detection pad is controlled to reduce the number of false positives indicated by the RFID tag.

A method for controlling NFC tag and a controlled NFC tag, said method comprising: producing an on or off control signal causing an electronic switch to close or to open, the off or on control signal being exerted upon the electronic switch in parallel connection with the NFC antenna coil; by means of an enabling signal or a disabling signal emitted by the electronic switch, enabling or disabling transfer of electromagnetic energy coupled with the NFC antenna coil to the NFC tag chip. The controlled NFC tag comprises: an NFC tag body, an electronic switch in parallel connection with the NFC antenna coil, and an electronic switch control circuit producing on or off control signals for the electronic switch. The present invention allows information inside the NFC chip to be accessed according to certain conditions, thus avoiding unnecessary operations while enhancing the security of information stored in the NFC chip.

A system and method for tracking medical articles located in a container includes a hybrid isolated magnetic dipole (“IMD”) probe that provides an activating EM energy RF field having a magnetic near field at least as great as the electric near field, both of which cover the entire interior of the container. The probe comprises a main element having capacitive coupling across at least one slot and spacing above a ground plane to thereby form an isolated electric field and an equally strong or stronger magnetic field that fills the interior of the container to activate RFID tags therein. A dual system is provided for larger containers. A dynamic impedance tuning system controls the probe impedance for increased efficiency in transferring power to the interior of the container. Beam steering is provided with the IMD probe.

The embodiments relate to a control device for transmission of at least one command. The control device includes at least one RFID transponder unit for transmission of an identification code and a read device for reading out the identification code of the RFID transponder unit. The RFID transponder unit is disposed within a medical device and has at least one initiation device for initiating the at least one command. In one embodiment, the control device includes three alarm units for triggering different alarms, such as after initiation of the at least one command, after interruption of a transmission link, and after a charging value of an energy storage unit has fallen below a threshold value.

A radio frequency identification (RFID) tag includes a power source, a transmitter to transmit a unique identifier, and a receiver operatively coupled to the transmitter and to receive low-frequency signals from an active RFID transceiver located in the vicinity. The transmitter is activated by the power source responsive to the receiver receiving a wake up command at a predetermined low frequency from the active RFID transceiver. An RFID transceiver includes an antenna, non-transitory computer-readable medium storing instructions and a transmitter to transmit low-frequency signals to RFID tags through the antenna. A processing device of the RFID transceiver can execute the instructions to insert a station identifier (ID) into the low-frequency signals that direct the RFID tags to retransmit the station ID, wherein the station ID identifies an approximate location of the RFID tags.

At least some aspects of the present disclosure feature a mobile sensing system comprising a sensing device for measuring a thermal property of an object, comprising an RF circuit and an antenna electronically coupled to the RF circuit, a sensor electronically coupled to the RF circuit, and a thermal source thermally coupled to the sensor and electronically coupled to the RF circuit, a mobile device having a processor, an RF reader connected to or integrated with the mobile device, wherein the RF reader is configured to interrogate the sensing device; wherein the sensing device receives power when the RF reader interrogates the sensing device and provides at least a portion of the power to the thermal source.

A batteryless payment device is disclosed. According to certain embodiments, the batteryless payment device may include a first communication system and a second communication system, the second communication system being a near-field-communication (NFC) system. The batteryless payment device may also include a power receiver coupled to the first communication system and configured to wirelessly receive power from an external device for powering the first communication system. The batteryless payment device may further include a controller configured to: when the first communication system is powered, establish, via the first communication system, a first wireless connection with a user device; receive, through the first wireless communication, a token from the user device; establish, via the second communication system, a second wireless connection with a payment terminal; and transmit, through the second wireless connection, the token to the payment terminal.

Provided is an information processing apparatus including an IC module that performs communication with an external apparatus, a detection unit that detects an electric wave, a timer that measures a time course after being started, a power supply unit that supplies a power source to the IC module, and a control unit that controls a supply amount of the power source based on a detection result of the electric wave and a determination result of a value of the timer. The control unit starts the timer after terminating communication with the external apparatus, restarts the timer every time a transmission start of an electric wave is detected, in response to detection of an electric wave received from an outside at a predetermined interval in the detection unit.

Methods and systems receive location identification tokens from transmitters using a portable computerized device. A first location identification token is received from a first location transmitting device, while the portable computerized device is within a predetermined distance from a designated location. A second location identification token is received from a second location transmitting device. A current location signature is calculated using the first and second location identification tokens. A previously stored location signature associated with the first and second location identification tokens is obtained from a computer readable storage medium. The current location signature is compared with the previously stored location signature to determine a similarity measure. The location identification tokens and the current location signature are stored in a memory and transmitted to a server. The presence of the portable computerized device at the designated location is verified based on the location identification tokens and the current location signature.

Synthesized-beam RFID readers may be used to locate RFID tags. In one embodiment, a tag's response rates on different beams can be used, along with the target locations of those beams, to estimate the tag's location. The estimated tag location is within a region where beams with nonzero tag response rates overlap, and the distances of the estimated tag location from any two different beam target locations may correspond to a ratio of tag response rates on the two different beams. In another embodiment, a tag's response rates on different beam pairs configured to cooperatively power RFID tags can be used, along with the target locations of those beam pairs, to estimate the tag's location.