Abstract: shapeShift is a compact, high-resolution (7 mm pitch), mobile tabletop shape display. We explore interactions enabled by 2D spatial manipulation and self-actuation of a tabletop shape display. On a passive platform, the user is able to freely move and spin the display as it renders spatially relevant content. We introduce use cases for rendering lateral I/O elements, exploring volumetric datasets, and grasping objects. On a self-actuated platform, shapeShift can display moving objects and provide both vertical and lateral kinesthetic feedback. We show its use as an encounter-type haptic device combined with a head-mounted display.