Volumetric Windows also have the ability to act as interactive monitors. One can use such a display in their quarters not only as a window, but as a computer-controlled big screen volumetric television or computer monitor to add a large degree of comfort or working capability. The two-way ability of the screen to "look back" at the user allows for it to detect finger and hand motions of the user and emulate a tactile interface, like a mid-air keyboard or the ability to use a finger as a cursor. They can be used in briefing rooms as well to act as visual aids for detailing a mission (usually built into the walls or table), as a form of teleconferencing or webcam/video chat, and even allow the Commanding officer or those she permits access to view through any volumetric window aboard the ship as a security option; with or without sending her image to the party being observed. Of course, some officers tend to use this 'ship peek' ability for more recreational ends...