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  2. Stealth wallpaper - Wikipedia

    en.wikipedia.org/wiki/Stealth_wallpaper

    For computer network security, stealth wallpaper is a material designed to prevent an indoor Wi-Fi network from extending or "leaking" to the outside of a building, where malicious persons may attempt to eavesdrop or attack a network. While it is simple to prevent all electronic signals from passing through a building by covering the interior ...

  3. Faraday cage - Wikipedia

    en.wikipedia.org/wiki/Faraday_cage

    Electronic components in automobiles and aircraft use Faraday cages to protect signals from interference. Sensitive components may include wireless door locks, navigation/GPS systems, and lane departure warning systems. Faraday cages and shields are also critical to vehicle infotainment systems (e.g. radio, Wi-Fi, and GPS display units), which ...

  4. Electromagnetic shielding - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_shielding

    A conductive enclosure used to block electrostatic fields is also known as a Faraday cage. The amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of holes in a shield to an incident electromagnetic field.

  5. Not on my Wi-Fi: anti-wi-fi paint helps keep your connection ...

    www.aol.com/2009/10/04/not-on-my-wi-fi-anti-wi...

    Most Wi-Fi technologies operate at 2.4GHz; the Tokyo pain can reportedly block frequencies all the way up to 100GHz. A 200GHz-blocking pain is also in the works, according to this report.

  6. Wallpaper - Wikipedia

    en.wikipedia.org/wiki/Wallpaper

    New types of wallpaper under development or entering the market in the early 21st century include wallpaper that blocks certain mobile phone and WiFi signals, in the interest of privacy. The wallpaper is coated with a silver ink which forms crystals that block outgoing signals. [23]

  7. Electromagnetic interference - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_interference

    Prior to the introduction of Wi-Fi, one of the biggest applications of 5 GHz band was the Terminal Doppler Weather Radar. [ 25 ] [ 26 ] The decision to use 5 GHz spectrum for Wi-Fi was finalized at the World Radiocommunication Conference in 2003; however, meteorological authorities were not involved in the process.

  8. Outlawed anti-drone radio jammers are being marketed on ... - AOL

    www.aol.com/news/anti-drone-companies-market...

    Several online retailers and drone technology companies are marketing the sale of radio frequency jammers as drone deterrence or privacy tools, sidestepping federal laws that prohibit such devices ...

  9. Wi-Fi - Wikipedia

    en.wikipedia.org/wiki/Wi-Fi

    Wi-Fi allows wireless deployment of local area networks (LANs). Also, spaces where cables cannot be run, such as outdoor areas and historical buildings, can host wireless LANs. However, building walls of certain materials, such as stone with high metal content, can block Wi-Fi signals. A Wi-Fi device is a short-range wireless device.

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