In some implementations, a system may receive door position information that indicates a position of a door of a room. The system may receive, in association with a read operation of an RFID reader, first tag information associated with a first RFID tag, wherein the first tag information is received via a first antenna of the RFID reader, and wherein the RFID reader is disposed within the room and a first directional range of the first antenna is directed toward the door. The system may determine, based on the first tag information being received via the first antenna, a location status of the first RFID tag according to the door position information. The system may perform, based on the location status, an action associated with indicating a location of the first RFID tag.

A radio frequency identification (RFID) automatic vehicle identification (AVI) system configured to mitigate signal interference, the system comprising a plurality of RFID readers, comprising a first RFID reader and a second RFID reader; and a plurality of antennas, wherein a first antenna is connected to the first RFID reader and a second antenna is connected to the second RFID reader. Prior to the first RFID reader transmitting a signal through the first antenna, the first RFID reader samples a received radio frequency (RF) signal from the first antenna, and if the received RF signal meets predetermined strength and frequency criteria, the first RFID reader inhibits transmission of the signal through the first antenna.

A system (100) for storing, identifying and localizing supports (20, 21) for tissue samples embedded in paraffin, comprising—a plurality of supports (20, 21), wherein each one is provided with a respective RFID tag (201), said supports (20, 21) being each a histology cassette (20) configured to contain a tissue sample embedded in paraffin, or a slide (21); —a plurality of trays (1), wherein each tray (1) is provided with a respective RFID tag (101), and is configured to contain a plurality of said supports (20, 21), ach tray (1) being provided with a plurality of seats (11), each seat (11) being configured to receive a respective support (20, 21) and each support (20, 21) being adapted to be arranged at a respective seat (11); —at least one component (3) provided with a plurality of RFID antennas (10, 31), said plurality of RFID antennas (10, 31) comprising an RFID antenna (10) for reading the RFID tag (101) of a tray (1) of said plurality of trays, and RFID antennas (31) for reading the RFID tags (201) of the supports (20, 21); —at least one RFID interrogator (4); —one or more demultiplexers (5), by means of which the RFID interrogator (4) may be connected to each RFID antenna (10, 31) of said plurality of RFID antennas (10, 31), said one or more demultiplexers (5) being configured to sequentially activate a unique signal transmission line for each RFID antenna (10, 31) of said plurality of RFID antennas (10, 31); —an electronic control unit (6), configured to synchronize said one or more demultiplexers (5) and said at least one RFID interrogator (4) with one another, to sequentially read the RFID tags (210) of the supports (20, 21) and the RFID tag (101) of a tray (1) of said plurality of trays by means of one RFID antenna (10, 31) at a time, of said plurality of RFID antennas (10, 31).

Remote measuring and sensing. Some example embodiment related to optical energy harvesting by identification device, such as infrared identification device GRID 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 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.

According to various aspects and technical advantages, an apparatus for electronic shelf labels includes a controller circuit for communicating with communication devices using a contactless communication protocol, a set of two or more antenna coils, each antenna coil located at a known position relative to the controller circuit, and a switch for selectively coupling the controller circuit to one or more of the set of antenna coils. The controller circuit is configured to determine a physical location of a communication device based on which antenna coil from the set of antenna coils the communication device is using to communicate with the controller circuit

A wireless system includes a plurality of objects. The wireless system includes a controller and a radio frequency identification (RFID) read-write device. Each of the objects includes an RFID device and a transceiver. An object and methods of tracking objects are also disclosed.

Various apparatuses for use in a wireless network are disclosed. A first apparatus comprises two antennae oriented orthogonally, a biosensor capable of reading a user's fingerprint, and a housing comprising a groove for guiding a user's finger, the groove physically separating the antennae, effectively creating a radome for each antenna. A second apparatus comprises a printed circuit board (PCB) a port, a shell enclosing the PCB, and at least one horseshoe gasket, the shell and gasket creating a waterproof seal isolating the port and the external environment from the rest of the PCB. A third apparatus comprising a bracket for attaching a housing to a building material, an aiming annulus for aiming the housing and the housing. Wherein two or more of the bracket, aiming annulus and housing may be joined in order to mount and aim the housing using one or more structures on the components.

An antenna method and apparatus for a Radio Frequency Identification (RFID) reader includes an RFID reader, a plurality of radio ports of the RFID reader, and a plurality of linearly polarized antenna elements coupled to the radio ports, wherein the RFID reader directs the radio ports to sequentially communicatively connect only one antenna element at a time to the RFID reader such that only one antenna element is operable to transmit/receive at any instant in time. The antenna elements are mounted in an alternating vertically polarized and horizontally polarized configuration.

Multiple stationary radio frequency (RF) identification (RFID) readers are deployed overhead in a venue and are operated to read RFID tags. A mobile RFID reader is also operated in the venue for reading the RFID tags. The mobile reader is located in the venue, and a host server synchronizes the operation of the stationary readers with the operation of the mobile reader, determines when the mobile reader is in substantially simultaneous, synchronous operation with the stationary readers, and responsively modifies the operation of the stationary and mobile RFID readers to optimize the RFID reading performance.