Systems, methods and apparatus are described for a HERF weapon that may emit high-energy radio waves at a target based on locational information and a frequency associated with the target. The HERF weapon may receive the frequency and locational information from a sensing system. The HERF weapon may emit a high energy pulse toward the target and on the frequency associated with the target to disable or destroy the target without affecting nearby devices. The HERF weapon may allow the user to avoid detection by using a frequency that corresponds to the target's operating frequency.

A tintable window is described having a tintable coating, e.g., an electrochromic device coating, for regulating light transmitted through the window. In some embodiments, the window has a transparent display in the window's viewable region. Transparent displays may be substantially transparent when not in use, or when the window is viewed in a direction facing away from the transparent display. Windows may have sensors for receiving user commands and/or for monitoring environmental conditions. Transparent displays can display graphical user interfaces to, e.g., control window functions. Windows, as described herein, offer an alternative display to conventional projectors, TVs, and monitors. Windows may also be configured to receive, transmit, or block wireless communications from passing through the window. A window control system may share computational resources between controllers (e.g., at different windows). In some cases, the computational resources of the window control system are utilized by other building systems and devices.

Described herein is a system for drone defense, comprising at least one jammer and at least one radio detector, wherein the jammer is set up to send an interference signal over a frequency range, and the radio detector is set up to detect a radio control signal of a drone, the frequency range of the interference signal comprises a carrier frequency of the radio control signal or a GPS signal, wherein the jammer is configured to temporarily interrupt the interference signal and the radio detector is configured to receive the interference signal, detect the interruptions and detect the radio control signal of the drone within the interruptions of the interference signal.

A system for providing integrated detection and countermeasures against unmanned aerial vehicles include a detecting element, a location determining element and an interdiction element. The detecting element detects an unmanned aerial vehicle in flight in the region of, or approaching, a property, place, event or very important person. The location determining element determines the exact location of the unmanned aerial vehicle. The interdiction element can either direct the unmanned aerial vehicle away from the property, place, event or very important person in a non-destructive manner, or can cause disable the unmanned aerial vehicle in a destructive manner.

An Unmanned Aerial Vehicle is disclosed. The Unmanned Aerial Vehicle includes a body, rotors attached to the body, one or more sensors, and an electromagnetic pulse transmitter. The electromagnetic pulse transmitter is configured to transmit an EMP and the Unmanned Aerial Vehicle is configured to track a target Unmanned Aerial Vehicle using the one or more sensors and direct the electromagnetic pulse transmitter at the target Unmanned Aerial Vehicle to disrupt the target Unmanned Aerial Vehicle.

A microphone jammer includes an ultrasonic transducer for emitting an ultrasonic jamming signal to jam a microphone of an external electronic device. The apparatus includes a sound chamber that is shaped to direct the ultrasonic jamming signal towards an area for placement of an external electronic device that includes the microphone. The apparatus may include a base and a top portion connected to the base, with the ultrasonic transducer being in the top portion and the sound chamber being shaped to direct the ultrasonic jamming signal towards the base.

Disclosed herein are methods, apparatuses, systems, and computer readable media relating to formation of acoustic conditioning and acoustic mapping of an enclosure using sound sensor(s) and emitter(s).

A method includes detecting an initial vocalization by a user in an environment including a primary device and a secondary device, analyzing the initial vocalization to determine whether a future vocalization is likely to contain sensitive information based on the initial vocalization where the future vocalization is a potential future vocalization, and controlling, based on determining that the future vocalization is likely to contain sensitive information, a speaker of the primary device to output a noise canceling signal configured to prevent the secondary device from detecting the future vocalization.

Disclosed are an anti-drone method using a GPS spoofing signal and a system thereof. According to an embodiment of the inventive concept, an anti-drone method may include injecting a GPS spoofing signal to analyze a drone feature of a target drone and hijacking the target drone by injecting a GPS spoofing signal into the target drone based on a drone hijacking strategy corresponding to the analyzed drone feature among predefined drone hijacking strategies. The analyzing of the drone feature may include injecting the GPS spoofing signal to analyze a safety device mechanism (GPS fail-safe) and a path-following algorithm of the target drone.

The present disclosure relates to preventing laser access to microphones of smart devices. In one embodiment, a microphone of the smart device may be covered with an opaque material such as a cloth cover. The opaque material may serve as a barrier that is impenetrable to light, thereby preventing laser light to reach the microphone. In a further embodiment, a smart device may prevent the one or more microphones of the smart device from receiving an audio command embedded in a light signal by disrupting the light signal, ignoring the audio command, or both. In another embodiment, the smart device may block the audio command from being received at a microphone of a smart device by determining a frequency of the light signal, instructing a laser jammer to transmit a counter light with the frequency to interfere with the light signal.