An antenna device includes a power feed coil and a ring-shaped conductor arranged about an axis and a ring-shaped conductor including first and second edge end portions in an axial direction and a cavity inward from the first edge end portion. At least a portion of the cavity overlaps with a coil opening of the power feed coil when seen from the radial direction. The power feed coil causes electric field coupling, magnetic field coupling, and/or electromagnetic field coupling with the cavity. The ring-shaped conductor defines and functions as a booster antenna of the power feed coil. A substantial coil opening defining and functioning as an antenna is larger than that when only the power feed coil is provided, thus facilitating coupling with a communication partner-side antenna coil.

An identification device and an identification setting system are provided. The identification setting system includes the identification device and a reader. The identification device switches a plurality of receiving frequencies to receive at least one of a plurality of setting data. The identification device performs a plurality of setting operations according to the plurality of setting data to obtain a plurality of pieces of identification information, and performs a plurality of different sensing identification operations according to the plurality of pieces of identification information.

A method and system for communicating estimated blood loss parameters of a patient to a user, the method comprising: receiving data representative of an image, of a fluid receiver; automatically detecting a region within the image associated with a volume of fluid received at the fluid receiver, the volume of fluid including a blood component; calculating an estimated amount of the blood component present in the volume of fluid based upon a color parameter represented in the region, and determining a bias error associated with the estimated amount of the blood component; updating an analysis of an aggregate amount of the blood component and an aggregate bias error associated with blood loss of the patient, based upon the estimated amount of the blood component and the bias error; and providing information from the analysis of the aggregate amount of the blood component and the aggregate bias error, to the user.

A product tagging system is provided. The product tagging system includes at least one RF backscatter transmitter configured to emit (i) a main carrier RF signal, and (ii) Radio Frequency (RF) signals on two frequencies whose summation forms a twin carrier RF signal. The product tagging system further includes a passive RF backscatter tag associated with a product and configured to reflect and frequency shift the main carrier RF signal to a different frequency using the twin carrier RF signal. The product tagging system also includes at least one RF backscatter receiver configured to read the product on the different frequency by detecting a distributed ambient backscatter signal generated by a reflection and frequency shifting of the main carrier RF signal by the passive RF backscatter tag.

A universal radio frequency identification reader and emulation handheld device and system configured to read and emulate radio frequency identification tags in the low frequency, high frequency, and ultra-high frequency spectrums (from 30 kHz to 1050 MHz). The system may include a mobile or a web application to control and interact with the handheld device. The system may allow for the saving of radio frequency identification tag information in cloud infrastructure for later emulation.

A magnetic field induction coupled RFID system for scanning and reading at least one object having an RFID tag or inlay label device attached or embedded therein to impart a unique identity to each of the objects. The RFID tag has two distinct modes of air interface protocol operation, such that the tag is capable of being read at close proximity range by a device utilizing a command-and-control protocol, such as an NFC-protocol compatible smartphone or similarly functioning device, and alternatively by an RFID reader utilizing a different protocol capable of supporting efficient high-speed anti-collision features for enabling fast inventorying at item level of retail store items, warehousing, customs and logistics operations over considerably greater interrogation distances, where both protocols utilize substantially the same carrier frequency.

One 16 digits smart card shaped like a regular bank card in length and width with chip and swiping abilities which is divided into several different separate sectors. e.g. bank cards, credit cards, cash transactions, medical insurance usage and other personal documentation of information that are all stored on one smart card. This smart card is configured to hold financial information, general information, and documentation of a variety of various categories of different documents on its database. All parts can be accessible by one four-digit secret security code to ensure the safety of the card's information.

A product tagging system is provided. The product tagging system includes at least one RF backscatter transmitter configured to emit a Radio Frequency (RF) signal on a frequency. The product tagging system further includes a passive RF backscatter tag associated with a product and configured to reflect and frequency shift the RF signal to a different frequency. The product tagging system also includes at least one RF backscatter receiver configured to read the product on the different frequency by detecting a distributed ambient backscatter signal generated by a reflection and frequency shifting of the RF signal by the passive RF backscatter tag.

An in-home inventory and location system is provided. At least one RF backscatter transmitter, hosted on a device, is configured to emit a RF signal on a frequency. A set of passive RF backscatter tags, each associated with a respective one of a plurality of products in a given area, is configured to reflect and frequency shift the RF signal to a different frequency. At least one RF backscatter receiver, hosted on another device, is configured to read the products on the different frequency by detecting a distributed ambient backscatter signal generated by a reflection and frequency shifting of the RF signal by the passive RF backscatter tag. At least one of the device hosting the at least one RF backscatter transmitter and the other device hosting the at least one RF backscatter receiver is configured to maintain an inventory and location of the products in the given area.

A navigation assistance system is provided. At least one RF backscatter transmitter, hosted on a device, is configured to emit a RF signal on a frequency. A set of passive RF backscatter tags, each associated with a respective one of a plurality of navigation markers in a given venue, is configured to reflect the RF signal and frequency shift the RF signal to a different frequency. At least one RF backscatter receiver is configured to read the navigation markers on the different frequency by detecting a distributed ambient backscatter signal generated by a reflection and frequency shifting of the RF signal by the passive RF backscatter tag. At least one of the device hosting the at least one RF backscatter transmitter and the other device hosting the at least one RF backscatter receiver is configured to maintain an inventory of locations of the navigation markers in the given venue.