In some implementations, a system may receive, from a motion sensor, an inactivity indication that indicates a period of inactivity within a physical environment. The system may store, in a data structure, identifiers of a plurality of RFID tags that a tag reader read during the period of inactivity. The system may receive, from the motion sensor, a motion notification that indicates a period of activity within the physical environment. The system may cause the tag reader to collect an identifier of an RFID tag in the physical environment during the period of activity. The system may determine, based on the identifier and the identifiers of the plurality of RFID tags, a movement status associated with the RFID tag during the period of activity and perform an action associated with the movement status of the RFID tag.

Systems and methods for monitoring a throughway using a radio frequency identification (RFID) detection system. The RFID detection system includes (i) an image sensor configured to have a field of view directed towards a lane of the throughway; (ii) an RFID transceiver arrangement configured to interrogate RFID tags disposed on vehicles within the lane of the throughway; and (iv) a controller operatively connected to the image sensor and the RFID transceiver arrangement. The controller is configured to (1) cause the image sensor to capture a frame of image data representative of the lane of the throughway; (2) analyze the frame of image data to detect a presence of a vehicle in the lane of the throughway; (3) based on the analysis, determine a position of the vehicle relative to the RFID transceiver arrangement; and (4) configure an antenna array to generate a beam directed at the position of the vehicle.

This specification describes a method comprising determining an orientation of a first apparatus with respect to a second apparatus (S6.2) based on at least one radio frequency packet passed wirelessly between the first and second apparatuses, and causing performance of an active scan for the second apparatus or a third apparatus associated with the second apparatus (S6.5) only if it is determined that the orientation of the first apparatus with respect to the second apparatus satisfies at least one predetermined condition (S6.3).

The present invention relates to a system SY for determining a position of an RF transponder circuit RTC respective an ultrasound emitter unit UEU. The RF transponder circuit RTC emits RF signals that are modulated based on received ultrasound signals that are emitted or reflected by the ultrasound emitter unit UEU. The position of the RF transponder circuit RTC respective the ultrasound emitter unit UEU is determined based on a time difference ΔT1 between the emission of an ultrasound signal by the ultrasound emitter unit UEU and the detection by the RF detector unit RFD of a corresponding modulation in the RF signal emitted or reflected by the RF transponder circuit (RTC).

Systems, methods, and computer-readable media for adding beauty products to tutorials are presented. Methods include accessing video data comprising images of a presenter creating a tutorial, the tutorial depicting the presenter applying a beauty product to a body part of the presenter. Methods further include processing the video data to identify changes to the body part of the presenter from an application of the beauty product, and responding to identifying changes to the body part of the presenter from the application of the beauty product by processing the video data to identify the beauty product. Methods further include retrieving information regarding the beauty product and causing presentation of information regarding the beauty product on a display device.

Radio frequency identification discontinuity correction is provided by calculating a phase-time slope for a Radio Frequency Identifier (RFID) signal received from an RFID tag; estimating, based on the phase-time slope, a predicted phase reading for the RFID signal at a given time; and in response to detecting a phase discontinuity based on a difference between the predicted phase reading and an actual phase reading for the given time, adjusting a calculated distance to the RFID tag. The calculated distance may indicate that the RFID tag is inside of or outside of a designated zone, and that a motion of the RFID tag indicates travel towards or away from the designated zone, which may be used to add or remove an item associated with the RFID tag to an ongoing item list.

Described is a method for guiding a user for positioning a first RFID-enabled device relative to a second RFID-enabled device for allowing a robust RFID communication between the two RFID-enabled devices. The method includes placing the first RFID-enabled device to a first position relative to the second RFID-enabled device; receiving, by the first RFID-enabled device, when being located at the first position, a first RFID signal transmitted by the second RFID-enabled device; measuring, by the first RFID-enabled device, a first signal strength of the first RFID signal; placing the first RFID-enabled device to a second position relative to the second RFID-enabled device; receiving, by the first RFID-enabled device, when being located at the second position, a second RFID signal transmitted by the second RFID-enabled device; measuring, by the first RFID-enabled device, a second signal strength of the first RFID signal; determining, based on the first signal strength and on the second signal strength, a movement indication for a movement of the first RFID-enabled device towards a target position, at which there is expected a target RF coupling strength between the two RFID-enabled devices, which is stronger than a first RF coupling strength being associated with the first position and a second RF coupling strength being associated with the second position; and (h) providing the determined movement indication to the user of the first RFID-enabled device. In other embodiments, an RFID communication system and device are provided.

A wireless tag communication device includes an antenna configured to transmit a carrier wave and receive a response wave output from a wireless tag with respect to the carrier wave and to specify a position of the wireless tag to be searched based on a radio wave intensity of the response wave received by the antenna. The device includes: a radio wave controller configured to switch the carrier wave between a first and second carrier wave to be transmitted in a first and second polarization direction respectively; and a comparator configured to compare a first and second radio wave intensity of a first and second response wave respectively output from the wireless tag with respect to the first and second carrier waves respectively, and the radio wave controller switches the carrier wave between the first carrier wave and the second carrier wave based on a comparison result of the comparator.

The present disclosure provides a RFID terminal and a method of using the same. The RFID terminal includes: a directional antenna module configured to directionally receive a signal transmitted by an electronic tag on an item in a region to be read; a camera configured to collect an image of the region to be read; and a control unit configured to screen information of a target item according to the image of the region to be read captured by the camera.

According to one or more embodiments, the tag reader includes a communication controller, a temperature measuring sensor, and a processor. The communication controller controls an output signal to be output from an antenna of the tag reader. The temperature measuring sensor measures an internal temperature of the tag reader. The processor sets the output value of an output signal based on the measured temperature and causes the communication control circuit to output the output signal from the antenna at the set output value.