RFID-based electronic surveillance article systems are provided with first and second receiving antennas. An RF signal is transmitted to an RFID device, which transmits a return signal that is received by the receiving antennas. A position of the RFID device may be determined based on a difference between the strength of the return signal when received by the first antenna and the strength of the return signal when received by the second antenna. If RF signals are transmitted by the receiving antennas, the position of the RFID device may be determined by changing the strengths of the RF signals transmitted by each antenna and comparing the strength of the RF signal transmitted by the first antenna when the RFID device is at a threshold for receiving the signal to the strength of the RF signal transmitted by the second antenna when the RFID device is at the threshold.

The invention relates to a male device comprising an elongate portion and an antenna. The elongate portion extends in one direction between a first end and a second end, and is intended for receiving at least one female device by threading from the first end. The near-field communication antenna is placed inside the elongate portion and comprises at least one conductive turn comprising two connection terminals at the second end, the two connection terminals being intended for being connected to a reading circuit, the conductive turn being positioned so as to produce at least one magnetic field generating a flux passing through the elongate portion perpendicularly to the direction when the antenna is traversed by a current produced by the reading circuit.

An advertising display unit based on an anti-theft antenna includes an antenna body and an antenna panel installed on the antenna body. The antenna panel includes a front side and a reverse side. The antenna panel includes a display screen on one of the front side or reverse side. The display screen may be an LED screen or LCD screen. The display screen may be opaque or transparent.

An electronic price label system and electronic price label include a communicator configured to receive information relating to a product, a display for displaying information relating to a product, and a fastening ring for fastening the electronic price label to a product. The fastening ring is arranged to function as an antenna of the electronic price label, in which fastening ring a loop is formed.

A pedestal antenna for anti-theft systems in commercial establishment's entrances, which has the advantage or benefit of allowing the exhibit of physical or physical objects for exhibit or immediate access for the client as a display window which is immediately perceived by the client when they walk into the premises, as they also do when leaving the premises, as this product showcasing spot is in the same pedestal antenna, located at the access door.

A system for monitoring and controlling shopping cart usage comprises a wheel assembly that attaches to a shopping cart. In some embodiments the wheel assembly includes a wheel, a brake that can be activated to inhibit rotation of the wheel, a controller that controls the brake, a VLF receiver, and an RF transceiver. The RF transceiver may, for example, operate in a 2.4 GHz frequency band. In some implementations, the RF transceiver may be used to detect entry of the shopping cart into a checkout area of the store, and the VLF receiver may be used to detect that the shopping cart is exiting the store. The controller may activate the brake if the shopping cart attempts to exit the store without first passing through a checkout area.

A system for monitoring and controlling shopping cart usage comprises a wheel assembly that attaches to a shopping cart. In some embodiments the wheel assembly includes a wheel, a brake that can be activated to inhibit rotation of the wheel, a controller that controls the brake, a VLF receiver, and an RF transceiver. The RF transceiver may, for example, operate in a 2.4 GHz frequency band. In some implementations, the RF transceiver may be used to detect entry of the shopping cart into a checkout area of the store, and the VLF receiver may be used to detect that the shopping cart is exiting the store. The controller may activate the brake if the shopping cart attempts to exit the store without first passing through a checkout area.

A motorized cart retriever, which may be a cart pusher or a cart puller, can apply a force to a nest of human-propelled, wheeled carts to facilitate retrieval of the carts. The cart retriever can include a transceiver configured to wirelessly receive cart status information from cart transmitters of the wheeled carts and wirelessly report event data to a control unit. The cart status information may include an identification of the cart transmitter, a location of the cart, a lock or unlock status of a cart wheel, a misuse condition, etc. The event data can include the cart status information, a number of wheeled carts being retrieved, etc. The cart wheel may include a brake. The transceiver may communicate a message to the cart wheel to keep the brake unactuated during retrieval. The control unit may analyze the event data to detect traffic patterns of the carts.

A system may include a security controller communicatively coupled with pedestals having a first set of antennas and a second set of antennas spaced from the first set of antennas to form an interrogation zone. The security controller may be configured to alternate transmission and reception of interrogation signals between the first set of antennas and the second set of antennas. The security controller may be configured to determine whether a metal object is detected in the interrogation zone in response to the reception of the interrogation signals by the second set of antennas or by the first set of antennas. The security controller may be configured to generate and send an alarm signal in response to the metal object being detected in the interrogation zone.

An electronic price label system and electronic price label include a communicator configured to receive information relating to a product, a display for displaying information relating to a product, and a fastening ring for fastening the electronic price label to a product. The fastening ring is arranged to function as an antenna of the electronic price label, in which fastening ring a loop is formed.