An adaptive inventory management system for use in a materials handling facility storing a plurality of items that are each associated with a Radio Frequency Identification (RFID) tag. The management system including a global inventory database subsystem and a RFID interrogator subsystem comprising a plurality of RFID interrogators that are each configured to read the unique identifier of the RFID tag associated with each of the plurality of items that are within a defined boundary of at least one scan zone generated by the respective RFID interrogator and to communicate the unique identifier of the each scanned RFID tag identified within each scan zone of the respective RFID interrogator to the global inventory database subsystem. The management system being selectively configured to effect user desired levels of fidelity and/or resolution with respect to the generated unique identifier of the each scanned RFID tag within a defined space of the materials handling facility.

An adaptive inventory management system for use in a materials handling facility storing a plurality of items that are each associated with a Radio Frequency Identification (RFID) tag. The management system including a global inventory database subsystem and a RFID interrogator subsystem comprising a plurality of RFID interrogators that are each configured to read the unique identifier of the RFID tag associated with each of the plurality of items that are within a defined boundary of at least one scan zone generated by the respective RFID interrogator and to communicate the unique identifier of the each scanned RFID tag identified within each scan zone of the respective RFID interrogator to the global inventory database subsystem. The management system being selectively configured to effect user desired levels of fidelity and/or resolution with respect to the generated unique identifier of the each scanned RFID tag within a defined space of the materials handling facility.

A radio frequency device utilizing an antenna having a single antenna structure resonant on multiple resonant frequency ranges. The antenna can be configured to operate within multiple frequency ranges for communication according to respective protocols associated with the respective frequency ranges.

An adaptive inventory management system for use in a materials handling facility storing a plurality of items that are each associated with a Radio Frequency Identification (RFID) tag. The management system including a global inventory database subsystem and a RFID interrogator subsystem comprising a plurality of RFID interrogators that are each configured to read the unique identifier of the RFID tag associated with each of the plurality of items that are within a defined boundary of at least one scan zone generated by the respective RFID interrogator and to communicate the unique identifier of the each scanned RFID tag identified within each scan zone of the respective RFID interrogator to the global inventory database subsystem. The management system being selectively configured to effect user desired levels of fidelity and/or resolution with respect to the generated unique identifier of the each scanned RFID tag within a defined space of the materials handling facility.

An apparatus, which allows a radio frequency identification (RFID) reader to recover quickly from transient input to its receiving subsystem when transitioning from writing to an RFID transponder to reading its response. In particular, this apparatus is comprised of muting circuits, which both attenuate transients in its receiving subsystem while writing to a transponder, and help the receiving subsystem settle quickly after experiencing such transients.

The disclosure concerns systems and methods for controlling access to a device with barcode-reading functionality. Enabling the barcode-reading functionality of the device may require providing authenticating information. A user may provide the authenticating information using an identification card with an embedded near field communication (NFC) tag. After the device or a charger of the device validates the embedded NFC tag, the device may enable the barcode-reading functionality but track an amount of time since a last barcode scan of the device. If the amount of time since the last barcode scan reaches a present period, the device may disable the barcode-reading functionality. The device may send a connection request from a portion of a local area network (LAN). A server may receive the request. The server may deny the device access to the LAN if the device is not authorized for use in the portion of the LAN.

A DC energy storage module has a plurality of DC energy storage devices electrically connected in series; and a passive or active radio frequency identification tag, or near field communication device located within the energy storage module; wherein the tag or device is configured to be activated from an inactive mode to an active mode in response to an electromagnetic field generated by a transmitter within range of the tag or device; and wherein the tag or device is configured to receive a location dependent identifier from the transmitter.

A high speed tabletop and industrial printer is disclosed with integrated high speed RFID encoding and verification at the same time. The industrial printer simultaneously prints on and electronically encodes/verifies RFID labels, tags, and/or stickers attached to a continuous web. The industrial printer comprises a lighted sensor array for indexing the printing to the RFID tags; and a cutter powered from the industrial printer for cutting the web that the RFID tags are disposed on. The industrial printer comprises two RFID reader/writers that are individually controlled. Specifically, one of the RFID reader/writers comprises the ability to electronically encode the RFID tags while the web is moving; and the second RFID reader/writer uses an additional RFID module and antenna on the printer for verifying the data encoded to the RFID tags. The printer provides for successive writes to various memory blocks and optimizes the communication sequence between the interrogator and tag.

An example method includes receiving a plurality of multidimensional player location data per unit time comprising participant locations at calculated times; generating synchronized participant coordinate data by synchronizing the plurality of multidimensional player location per unit time based on timestamps associated with tag location data; and outputting the synchronized participant coordinate data for visualization rendering.

A radio transponder and method for data transfer between a radio transponder reading device and the radio transponder, wherein a control unit of the radio transponder controls a change in a load impedance via a control signal having a selected switching pulse frequency and a selected switching pulse quantity to produce a response signal, where the control unit codes multiple-valued at least ternary symbols into the control signal, and where symbol values are assigned to respective switching pulse sequences each having a unique combination of switching pulse frequency, switching pulse number and phase shift such that only combinations for which the quotient of switching pulse number and switching pulse frequency lies within a predefined value range are selected.