Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate into a building, where the passage of the wavelengths into the building could adversely affect people or machinery within the building. The combination of filters is useful improve wireless networks performance by blocking or attenuating undesired electromagnetic interference, and radio frequency interference.

Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate which would pose a security risk. The combination of filters is useful to prevent unauthorized data collection and information exchange from or within buildings or otherwise prevent such unauthorized data collection and information exchange from, for example, computer monitors or screens, personal digital assistance, and local area networks. The substrate with the combination of filters may be in the form of a bag or a tent.

Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate which would pose a security risk. The combination of filters is useful to prevent unauthorized data collection and information exchange from or within buildings or otherwise prevent such unauthorized data collection and information exchange from, for example, computer monitors or screens, personal digital assistance, and local area networks. The substrate with the combination of filters may be in the form of a bag or a tent.

Abstract: An enhanced wireless network system including a visible-light transparent, transmission shielding component for application to or incorporation in windows to create a shielded wireless network operation area. The shielding component enhances network performance by substantially reducing extraneous electromagnetic interference and enhances network security by substantially containing electromagnetic transmissions to desired areas. The shielding component may comprise several alternating layers of metal, to substantially attenuate transmissions to varying degrees, including attenuation of 20 to 50 db in the 1 MHz to 100 GHz range and beyond, while simultaneously permitting substantial transmission of visible light (such as 15-55%).

Abstract: A wireless communication device such as a cell phone is rendered temporarily inoperable by enclosing the device in a container such as a heat sealable bag (1) which has been metallized so that when the device (2) is sealed in the container (1) it is surrounded by a metal layer (9) which blocks signals to and from the device (3) to thereby render it inoperable. The device is sealed within the container (1) by a seal such as a heat seal which will reveal any attempt to remove the device from the container.

Abstract: The present invention is in the field of thermoplastic films used to improve performance of windows, glazings, and other devices, and, more specifically, the present invention is in the field of films that are edge cauterized, methods of edge cauterizing such films, and windows, polymeric interlayers, glazings, and other devices comprising such films.

Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate into a building, where the passage of the wavelengths into the building could adversely affect people or machinery within the building. The combination of filters is useful improve wireless networks performance by blocking or attenuating undesired electromagnetic interference, and radio frequency interference.

Abstract: The invention describes a system and methods for filtering electromagnetic, visual, and minimizing acoustic transmissions. In particular, the anti-surveillance security system of the present invention can be readily configured by connecting a combination of filters to a transparent substrate, whereby the system has a shielding effectiveness_between 22 db-40 db in the frequency range of 30 megahertz-3 gigahertz, an IR transmission at wavelengths between 780 nm and 2500 nm of no more than 50%, and a light transmission less than 1% for wavelengths up to 450 nm.