Lightweight shielded enclosures and systems provide a high level of acoustic, RF, EMI and EMP protection. Such enclosures and systems include one or more lightweight, non-conductive beams arranged to support a shielded covering.

A method, for preventing the intelligible voice recording is provided. The voice of a subject or interlocutor is recorded for a given time interval thereby providing a voice recording. The voice recording is cut into shorter time interval segments thereby providing a set of voice recording segments. The set of voice recording segments is mixed in a randomly rearranged order. The mixed set of voice recording segments is spliced into a single randomly mixed voice recording. Emitting the randomly mixed voice recording during speaking of the subject or interlocutor prevents the intelligible recording of the voice of the subject or interlocutor.

The game table reading system comprises reading antennas for each of a plurality of reading areas of a game table, read-restriction antennas for each of the plurality of the reading areas, the read-restriction antennas restricting the RFID tag embedded in a game token placed in the corresponding reading area from being read by the reading antenna corresponding to the other adjacent reading areas, a reading control device that controls the reading antennas, and a read-restriction control device that controls the read-restriction antennas. The read-restriction control device causes the read-restriction antennas corresponding to the reading areas adjacent to the reading areas corresponding to the reading antenna that the reading control device causes to read, in synchronization with the reading control device.

Disclosed is a method of producing an output signal from a signal generator, comprising: determining a driving input to the signal generator, the driving input for driving the signal generator to provide a predetermined output signal, wherein the output signal includes at least one frame, the at least one frame comprising an active period and a dummy period and wherein the active period and dummy period are determined by the driving input. Also disclosed is a method of producing an output signal from a signal generator, comprising: receiving a synchronisation signal; obtaining an input signal for controlling the signal generator to generate an output signal comprising at least one frame wherein the at least one frame comprises at least one active period and at least one dummy period; producing the output signal comprising a series of frames; and, synchronising the output signal with the synchronisation signal by varying a duration of the at least one of the dummy period or active period.

A method, device, system and kit for preventing the intelligible voice recording Is provided. The voice of a subject or Interlocutor Is recorded for a given time Interval thereby providing a voice recording. The voice recording Is cut Into shorter time interval segments thereby providing a set of voice recording segments. The set of voice recording segments is mixed in a randomly rearranged order, The mixed set of voice recording segments is spliced into a single randomly mixed voice recording. Emitting the randomly mixed voice recording during speaking of the subject or interlocutor prevents the Intelligible recording of the voice of the subject or interlocutor.

A wireless device includes: a plurality of antennas; a first correlation series generator configured to generate a first correlation series based on transmission data; a second correlation series generator configured to generate a second correlation series based on the first correlation series; a first modulator configured to modulate the transmission data to generate a first modulated signal; a second modulator configured to modulate the first correlation series to generate a second modulated signal; a third modulator configured to modulate the second correlation series to generate a third modulated signal; a signal combiner configured to combine the first to third modulated signals to generate first to third transmission signals; and a transmitter configured to output the first to third transmission signals respectively via first to third antennas among the plurality of antennas.

A wireless device includes: a plurality of antennas; a first correlation series generator configured to generate a first correlation series based on transmission data; a second correlation series generator configured to generate a second correlation series based on the first correlation series; a first modulator configured to modulate the transmission data to generate a first modulated signal; a second modulator configured to modulate the first correlation series to generate a second modulated signal; a third modulator configured to modulate the second correlation series to generate a third modulated signal; a signal combiner configured to combine the first to third modulated signals to generate first to third transmission signals; and a transmitter configured to output the first to third transmission signals respectively via first to third antennas among the plurality of antennas.

Systems, methods, and apparatus for identifying, tracking, and disrupting UAVs are described herein. Sensor data can be received from one or more portable countermeasure devices or sensors. The sensor data can relate to an object detected proximate to a particular airspace. The system can analyze the sensor data relating to the object to determine a location of the object and determine that the object is flying within the particular airspace based at least in part on location data. A portable countermeasure device can be identified that corresponds to the location of the object. The system can transmit information about the object to the identified portable countermeasure device. The portable countermeasure device can transmit additional data relating to the object to the system.

In accordance with some embodiments, an apparatus that seals the audio path of an enclosed device is provided. The apparatus includes a first housing portion and a second housing portion, when mated, are arranged to enclose a device, where a surface of the second housing portion is arranged to impart pressure on the device toward the first housing portion. The apparatus further includes a first supporting portion disposed along one side of the first housing portion and arranged to support the device. The apparatus also includes a first liner disposed in the first housing portion and arranged to form a first cavity, where the first cavity is adjacent to the first supporting portion. The apparatus further includes a noise generator operable to provide noise signal stream and a first audio output device coupled to the noise generator operable to output first masking signals to the first cavity.

A system for interacting with a thermal detector includes at least one unmanned aerial vehicle and a sensor mounted to the at least one unmanned aerial vehicle. The sensor is configured to determine the presence of a component of the thermal detector and to generate a signal indicative of the presence of the component. The system also includes a beam emitter mounted to the at least one unmanned vehicle and in communication with the sensor. The beam emitter includes a beam source configured to direct a beam of thermal radiation to the thermal detector in response to the signal from the sensor.