T(ether) is a novel spatially aware display that supports intuitive interaction with volumetric data. The display acts as a window affording users a perspective view of three-dimensional data through tracking of head position and orientation. T(ether) creates a 1:1 mapping between real and virtual coordinate space, allowing immersive exploration of the joint domain. Our system creates a shared workspace in which co-located or remote users can collaborate in both the real and virtual worlds. The system allows input through capacitive touch on the display with a motion-tracked glove. When placed behind the display, the user's hand extends into the virtual world, enabling the user to interact with objects directly.