You can buy coating for your windows that blocks RF. e.g. http://www.scottishwindowtinting.com/residential-window-film/window-film-blocks-radio-frequency-rf-ra

You can buy coating for your windows that blocks RF. e.g. http://www.scottishwindowtinting.com/residential-window-film/window-film-blocks-radio-frequency-rf-radiation/ http://www.scottishwindowtinting.com/residential-window-film... Can usually get in via custom order from anywhere that does window tinting.