description the preferred embodiment herein described is not intended to be exhaustive or to limit the invention to the precise form disclosed it is chosen and described to best explain the invention so that others skilled in the art to which the invention pertains might utilize its teachings referring to fig1 the security masking box 1 is a box 2 with a cover 3 the cover 3 is preferably connected to the box 2 by a hinge 4 alternatively the cover 3 may be a separate piece that fits onto the box 2 as seen in fig2 the box 2 has a double wall 5 construction with sound absorbing materials 6 arranged between the walls 5 the cover 3 uses the same double wall 5 construction with sound absorbing materials 6 as the box 2 the interior surfaces of the box 2 may be covered with a sound absorbing material such as felt 25 the felt 25 will also provide a soft surface to protect the surfaces of devices 8 placed within the box 2 in one embodiment as shown in fig1 the cover 3 is provided with a window 7 to allow the cellular or mobile wireless devices 8 to be viewed inside the box for visual observation of any incoming calls.