Embodiments of the present disclosure generally relate to a wireless identification tag with varying ID transmission timing, and system and methods for use thereof. In one implementation, the tag may include at least one transmitter and an energy storage component electrically connected to the at least one transmitter. The energy storage component may be configured to collect and store ambient energy and to power transmission of the at least one transmitter. The tag may also include at least one circuit. The at least one circuit may be configured to cause the at least one transmitter to transmit a sequence of identification signals in non-uniform intervals such that times between identification signal transmissions of three consecutive transmissions vary.

Embodiments of the present disclosure generally relate to systems and methods for providing privacy to downstream owners of electronically tagged goods. In one implementation, the system may include at least one processor that may be configured to store IDs for a plurality of tags including at least a first owner ID and a second owner ID for a particular tag; associate first information of the particular tag with the first owner ID at a time when the first owner of the particular tag is recorded as owning the tag; record a transaction transferring ownership of the particular tag from the first owner to a second owner; and after the transfer of ownership, associate second information of the particular tag with the second owner ID, and prevent the second owner from accessing the first information.

Embodiments of the present disclosure generally relate to a wireless identification tag configured to collect and store ambient energy for use in delayed transmission, and system and methods for use thereof. In one implementation, the tag may include a receiver for receiving ambient energy; a first capacitor for storing the ambient energy; and a second capacitor for collecting and storing the ambient energy. The second capacitor may have lower capacitance than the first capacitor. The tag may also include an inductor interconnecting the first capacitor and the second capacitor. The tag may also include circuitry configured such that ambient energy received by the receiver is initially stored in the second capacitor and subsequently transferred to and stored in the first capacitor. The tag may also include a transmitter electrically connected to first capacitor, to enable the energy stored in the first capacitor to power the transmitter.

Active radio-frequency identification, RFID, tag, and a product surveillance method using active RFID tags. The method includes: transmitting (202), by an active RFID tag, continuously a signal comprising an own identifier according to a predetermined schedule; receiving (204), by the active RFID tag, continuously a plurality of signals comprising a plurality of foreign identifiers transmitted by a plurality of other active RFID tags according to the predetermined schedule; measuring (206), by the active RFID tag, a received signal strength indication, RSSI, of each received signal; storing (208), by the active RFID tag, each foreign identifier of a signal whose RSSI exceeds a predetermined strength threshold; detecting (210), by the active RFID tag, that a signal with a stored foreign identifier is no more received according to the predetermined schedule and marking (212), by the active RFID tag, said stored foreign identifier.

Systems and methods for synchronizing operations of incompatible systems. The methods comprise: programming receiver operations of a Power Supply (“PS”) so that PS is interoperable with a first system of the incompatible systems; receiving by PS a wireless universal synchronization signal from a beacon of the first system; determining, by PS, a value for a phase offset setting of an internal signal conditioner circuit based on information contained in the wireless universal synchronization signal; generating a phase shifted Alternating Current (“AC”) signal by applying a phase offset to an input AC power signal in accordance with the determined value for the phase offset setting; buffering the phase shifted AC signal to generate an output AC power signal; and using a zero crossing of the output AC power signal to synchronize transmit and receive operations of a second system of the incompatible systems with the first system's transmit and receive operations.

In an aspect, the present disclosure includes a system for interrogating a person exiting a store. The system comprises one or more pedestals positioned to define an exit portal leading to a point of exit, one or more mmWave sensors, fixedly positioned near the point of exit, configured to receive one or more reflected mmWave beams from a person approaching the point of exit and triggering an interrogation of a security tag; and one or more security tag readers, fixedly positioned with the one or more pedestals, configured to read data from the security tag passing through the exit portal

Embodiments of the present disclosure generally relate to a wireless identification tag configured to harvest ambient energy and transmit an identification signal intermittently, and system and methods for use thereof. In one implementation, the tag may include an antenna configured to receive ambient energy. The tag may also include an energy storage component configured to aggregate and store the received ambient energy. The tag may also include a transmitter electrically connected to the energy storage component and configured to transmit the identification signal. The tag may also include a circuit connected to the transmitter and configured to implement an identification transmission rule, to cause the transmitter to delay sending the identification signal even when sufficient energy for transmission of the identification signal is aggregated and stored in the energy storage component.

Embodiments of the present disclosure generally relate to systems and methods for providing privacy to downstream owners of electronically tagged goods. In one implementation, the system may include at least one processor that may be configured to store IDs for a plurality of tags including at least a first owner ID and a second owner ID for a particular tag; associate first information of the particular tag with the first owner ID at a time when the first owner of the particular tag is recorded as owning the tag; record a transaction transferring ownership of the particular tag from the first owner to a second owner; and after the transfer of ownership, associate second information of the particular tag with the second owner ID, and prevent the second owner from accessing the first information.

Embodiments of the present disclosure generally relate to systems, methods, and computer readable media containing instructions for causing simultaneous triggering and sequential reading of a plurality of tags. In one implementation, the instructions may include displaying an activatable element on a graphical user interface for activating a 2.4 GHz transmitter. The instructions may also include activating the transmitter to cause each of a plurality of tags to send a unique tag ID to a receiver. The instructions may also include reading a first group of tag IDs during a first time interval; recording first information associated with the first group; maintaining activation of the transmitter to cause transmission of at least some of the tag IDs of the first group along with the unique tag IDs of a second group of tag IDs to the receiver; and recording second information associated with the second group.

In an Electronic Article Surveillance (EAS), a radio frequency identification (RFID) subsystem of an EAS system, can detect a presence of an RFID tag in an RFID interrogation zone associated with a boundary of a controlled area. The EAS system can first determine that the RFID tag is not authorized to leave the controlled area across the boundary. A radar subsystem of the EAS system can second determine, within a first window of time around the first detecting, whether an object in motion is associated with the boundary. The EAS system can alarm based upon both determining that the RFID tag is not authorized to leave the controlled area and determining that the object in motion is associated with the boundary.