A metamaterial comprising, a plurality of acoustic vector field sensors, each configured to sense an acoustic vector field of a fluid within a fluid-filled space in response to fluid waves, and producing an electrical signal corresponding to the sensed acoustic vector field; a processor configured to perform a time and space transform on the electrical signal; and at least one phased array transducer, configured to emit fluid waves according to a produced acoustic vector field pattern dependent on a result of the time and space transform, a within a portion of the fluid.

A system for measuring temperature in a sterilization autoclave, including a temperature transducer positionable inside a sterilization chamber of the autoclave and a receiver positionable outside the sterilization chamber. The receiver includes a reception antenna and a receiving electronic circuit connectable with a process controller of the autoclave. The receiving electronic circuit is configured to receive a temperature signal through the reception antenna, provide a control signal as a function of the temperature signal, and transmit the control signal to the process controller. The temperature transducer includes a hermetically closable transducer housing, temperature probes, a transmission antenna, an electronic transduction circuit, and a primary battery. The reception antenna of the receiving device is configured to transmit signals at two or more different frequencies.

Systems and methods are provided for automatically detecting passive components in communications systems using radio frequency identification (RFID) tags. A coupling circuit is provided in a system between a communications network and an RFID tag. The RFID tag is associated with a passive element of a distributed antenna system (DAS). The coupling circuit can allow an RFID signal received from an RFID transmitter over the communications network to be transported to the RFID tag. The coupling circuit can substantially prevent mobile communication signals on the communications network from being transported to the RFID tag.

A card reader device A1 includes: a housing 11; an openable shutter 311 that allows or disallows passing of a magnetic card C into the housing 11; a magnetic head 511 that reads magnetic data of the magnetic card C received in the housing 11; an interfering magnetic field generator 711 provided on a rear surface side of the shutter 311 to generate an interfering magnetic field in at least a region R between the magnetic head 511 and the shutter 311; an interfering magnetic field control unit 61 that controls generation of the interfering magnetic field; and an interfering magnetic field alleviating unit 81 that alleviates an influence of the interfering magnetic field on the magnetic head 511 so that the interfering magnetic field generated by the interfering magnetic field generator 711 does not interfere the reading of the magnetic data by the magnetic head 511.

A container has a base, sides and a top, the base, sides and top together defining a void within which items can be located in use, an electromagnetic shield fully surrounding at least part of the void to provide an electromagnetic shield between an exterior of the container and items located within the said part of the void, an antenna located within the said part of the void and a signal generator connected to the antenna and operable to apply a signal to the antenna to cause the transmission of an impeding signal within the said part of the void to impede the reception of signals transmitted from locations external to the container by items located within the said part of the void.

There are provided systems, devices and methods for detection and/or prevention of power line communications. In particular, there are provided systems, devices, and methods for preventing and/or detecting the possibility to communicate with an end unit via power line communication.

A system for near field communications is provided. The system can include a near field generator configured to generate a near field detectable signal comprising information. The system can include a near field detector configured to receive the near field detectable signal and output the information. The system can include an Electro-Magnetic (EM) shield surrounding the near field generator to block EM radio frequency (RF) signals in the vicinity of the near field generator from interfering with operations of the near field generator. The EM shield does not prevent communication of the near field detectable signal between the near field generator and the near field detector. The EM shield can be configured to reduce magnetic field loss from eddy currents in the EM shield as the near field detectable signal passes through the EM shield.

A system includes a disabling device with a circuit configured to disrupt communication of a drone.

A system for reducing driving while texting includes a containment vessel with a door. When the door is closed, the containment vessel attenuates cellular radio signals to prevent the user device held there within from communicating with a transceiver that is external to the containment vessel (e.g. Cell Tower). A transceiver having an antenna internal to the containment vessel looks for a transceiver of the user device to detect the presence of the user device within the containment vessel. A sensor detects when the door is closed. There is a way to detecting movement of a vehicle in which the containment vessel is held and a way to log data indicating at least time periods in which movement is detected and either the door is open or the transceiver of the user device is not detected. The data is reported (e.g. to a parent/guardian).

An apparatus and a method for preventing an information leakage. The apparatus for preventing the information leakage includes a shielding signal pattern generation unit configured to generate a shielding signal pattern including a radiation band and a radiation suppression band; a shielding signal generation unit configured to generate an electromagnetic leakage shielding signal corresponding to an Orthogonal Frequency Division Multiplexing (OFDM) scheme by using the shielding signal pattern; a signal amplification unit configured to amplify a transmitting power of the electromagnetic leakage shielding signal; and an antenna unit configured to transmit the amplified electromagnetic leakage shielding signal.