A system for monitoring marine animals includes a monitoring tag attachable to a marine animal. The monitoring tag includes a processor, a memory coupled to the processor, at least one communication interface, and at least one sensor. The processor is configured to store readings from the at least one sensor in the memory. The system also includes at least one communication receiver having a processor, a memory coupled to the processor, and at least one communication interface. The at least one communication receiver is configured to float in water. The processor of the monitoring tag is configured to determine, using the at least one sensor, whether the monitoring tag is within a communication range for radio frequency communication with the at least one communication receiver, and to transmit, via the at least one communication interface of the monitoring tag, the stored readings to the at least one communication receiver responsive to the processor of the monitoring tag determining that the monitoring tag is within the communication range for radio frequency communication with the at least one communication receiver.

An RFID tag includes a circuit board, an RFID IC and a functional module. The circuit board has an antenna conductor. The RFID IC is mounted on the circuit board. The functional module is connected to the circuit board through a lead wire. An electrical length of a connection wiring that electrically connects the functional module to an element on the circuit board is within ±10% of an integral multiple of a half wavelength of a radio signal that the RFID IC transmits or receives.

An RFID tag includes a circuit board and a plurality of functional modules. The circuit board has an antenna conductor and a ground plane. On the circuit board, a control circuit and an RFID IC are mounted. The functional modules are connected to the circuit board. The circuit board includes a main part and an extended part. The main part includes a mounting plane for the control circuit and the ground plane. The extended part includes the antenna conductor and is integrated with the main part. The extended part and the antenna conductor are longer than one edge of the main part and disposed along the one edge.

Remote measuring and sensing. Some example embodiment related to optical energy harvesting by identification device, such as infrared identification device (IRID devices). Other embodiments relate to RFID device localization using low frequency source signals. Yet still other embodiments related to energy harvesting by RFID in electric fields in both conductive and non-conductive environments.

A method and system for obtaining wire information, includes a RFID tag, a RFID reader, and a data center. The RFID tact obtains the sensing information of the wire and transmits the sensing information and identification information of the RFID tag. The RFID reader transmits high-frequency electromagnetic waves to trigger the RFID tact and transmits and receives sensing information and identification information sent by the RFID tag. The data center is communicatively connected with the RFID reader and determines the type of the received sensing information based on the received sensing information and identification information for data analysis.

Wireless sensing units, methods, systems, and processor-readable media for obtaining pressure data relating to one or more pressure locations of a surface area are described. A wireless sensing system includes a pressure monitoring device communicating with modular wireless smart floor tiles using RFID, either using an RFID reader or wireless network interface (e.g., 802.11). The tiles incorporate passive or active RFID tags. The tiles can be powered wirelessly, e.g. by a built-in piezoelectric power unit or by a wireless power source using magnetic resonance. A data capture circuit in each tile collects and saves the data for transmission to the floor pressure monitoring device. Various software applications can be enabled by the smart floor system, including fall detection and prediction, gesture input, intrusion detection, and user location tracking for smart home automation.

A transaction card may power on the transaction card using electric current induced from an interaction of the transaction card with an electromagnetic field. The transaction card may establish a communication with a device. The communication may indicate that the transaction card has powered. The transaction card may receive, from the device, a set of instructions to configure a set of applets on the transaction card after notifying the device that the transaction card has powered on. The set of applets to be configured may be related to completing one or more different transactions. The set of applets to be configured may be different than another set of applets already configured on the transaction card. The transaction card may configure the set of applets on the transaction card according to the set of instructions after receiving the set of instructions.

An electronic label apparatus comprises: an inductive communication unit which communicates wirelessly using inductive signals; a processor; memory including a computer program code; and a power source which supplies electric power to the inductive communication unit, the processor, and the memory for enabling their operation. The processor, the memory, the computer program code and the power source with the electric power cause the electronic label apparatus at least to: receive a plurality of inductive signals of known transmission powers from known locations; measure signal powers of the received inductive signals; and determine information about a location of the electronic label apparatus based on the measured signal powers, the known transmission signal powers and the known locations.

Systems and methods are described for low power radio devices. A first radio-based computing devices emits wireless power signals which are received by a plurality of second radio-based devices. A sensor controller of the one or more second radio-based devices determines if an interrupt signal is to be transmitted to an associated at rest microcontroller, to cause the microcontroller to prepare to receive or emit a radio information signal.

Disclosed is a method of gathering data from a hybrid RFID chip to determine usage of an item or article of clothing using a mobile device like a phone, laptop, or tablet. The hybrid RFID chip consists of a processor, a memory, a radio transceiver, a power harvesting antenna, and an impedance circuit that converts ambient radio frequency (RF) energy to electrical energy. The RFID chip receives a first power level from ambient RF energy and periodically broadcasts an identity. The mobile device can receive the broadcast identity, store the identity, transmit the identity and location to a remote server, and receive a notification message from the remote server. The remote serve can determine usage of the item or article of clothing by comparing current records to previous records of RFID chip identity, location, and mobile device application identity.