An example method includes estimating whether a collision occurred between a plurality of wide band response signals, the wide band response signals being responsive to a first interrogation signal transmitted by a first reader; when the collision is estimated to have occurred and the first reader received a first response from a particular tag, transmitting, by the first reader, a second interrogation signal, the second interrogation signal initiating a communication session between the reader and the particular tag; and transmitting, by the first reader, an acknowledgement packet to cause the tag to refrain from responding to a command during the communication session; and a second reader to refrain from interrogating the particular tag during the communication session.

Systems, methods, apparatuses, and computer readable media are disclosed for improving, in some examples, real time location systems with multiple location technologies. In one embodiment, a method is provided including receiving blink data from a location tag associated with a first sensor; receiving proximity data generated based on communications between the first sensor and a second sensor, the proximity data including a sensor identifier; calculating location data associated with the location tag based on the blink data; and determining sensor position calculation data associated with the first sensor based on the proximity data.

A reader includes a first antenna, a second antenna spaced apart from the first antenna, an RFID reader circuit, and a processor. The first antenna and the second antenna are connected to the RFID reader circuit. The first antenna is configured to receive a first signal from an RFID tag. The second antenna is configured to receive a second signal from the RFID tag. The processor controls the RFID reader circuit to determine a first value of a signal parameter associated with the RFID tag based on the first signal and a second value of the signal parameter associated with the RFID tag based on the second signal, receives, from the RFID reader circuit, the first value and the second value, and determines, based on the first value and the second value, whether the RFID tag is located between the first antenna and the second antenna.

An example disclosed method includes generating registration data, wherein the registration data comprises at least a tag-individual correlator and a status; receiving a status change indication, for at least one tag, wherein the at least one tag is identified by a tag unique identifier; correlating the tag unique identifier and the tag-individual correlator in the registration data; and updating the status in the registration data for the status change indication.

A sealing system for sealing a container lid to a container body includes at least three tags adapted to be mounted to the container lid or the container body, each tag having a unique ID and a first RF transceiver configured to transmit a first RF signal. The system includes at least three anchors adapted to be mounted to the other of the container lid and the container body, each anchor having a unique ID and a second RF transceiver configured to receive the first RF signals. A master unit is adapted to (i) determine, associated with the ID for each tag, a respective current 3D position, based on the first RF signals, (ii) store previously determined 3D positions for each tag, and (iii) generate an alert, timestamp and/or a log entry if separation between the current 3D position and a respective previously determined 3D position exceeds a threshold.

A system for location of assets on a premises is described. The system uses identifiers attached to a group of one or more assets along with mobile sensor packages. Each mobile sensor package contains components for data processing, data exchange, and storage. The sensor package also contains a sensor for reading identifiers and a location tool. The mobile sensor packages are attached to each mover of assets on the premises.

A plurality of autonomous mobile robots includes a first mobile robot having a first module for transmitting and receiving an Ultra-Wideband (UWB) signal, and a second mobile robot having a second module for transmitting and receiving the UWB signal. The second mobile robot follows the first mobile robot using the UWB signal.

A plurality of autonomous mobile robots includes a first mobile robot and a second mobile robot. The first mobile robot is provided with a transmitting optical sensor for outputting laser light, and a first module for transmitting and receiving an Ultra-Wideband (UWB) signal. The second mobile robot is provided with a receiving optical sensor for receiving the laser light and a plurality of second modules for transmitting and receiving the UWB signal. A control unit of the second mobile robot determines a relative position of the first mobile robot based on the received UWB signal and a determination of whether the laser light is received by the optical sensor.

A product locating system is provided. The system includes at least one Radio Frequency (RF) backscatter transmitter configured to emit a main carrier RF signal that forms an excitation signal. The system further includes a passive RF backscatter tag associated with a product and configured to generate an Ultra-Wideband (UWB) signal from the excitation signal. The system also includes at least one RF backscatter receiver configured to simultaneously receive both the excitation signal from the at least one RF backscatter transmitter and the UWB signal from the passive RF backscatter tag, and compute the time-difference-of-arrival (TDoA) therebetween. TDoA information from multiple RF backscatter receivers, including the at least one RF backscatter receiver, is aggregated to compute the location of the product to which the passive RF backscatter tag is attached.

According to a first aspect of the present disclosure, a mobile device for facilitating a transaction is provided, comprising: a secure element configured to contain transaction-related data; an ultra-wideband radio unit operatively coupled to the secure element and configured to carry out ultra-wideband radio communication with an external reader; wherein the ultra-wideband radio unit is configured to operate as an interface between the secure element and said external reader. According to a second aspect of the present disclosure, a reader for facilitating a transaction is provided, comprising: an ultra-wideband communication and tracking unit configured to communicate with at least one external mobile device having an ultra-wideband radio unit and to track said mobile device; a processing unit operatively coupled to the ultra-wideband communication and tracking unit, said processing unit being configured to process at least one transaction. According to a third aspect of the present disclosure, a corresponding method for facilitating a transaction using a reader is conceived. According to a fourth aspect of the present disclosure, a corresponding computer program is provided.