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Despite the convenience and intuitiveness of multi-touch gestures, there are some tasks that do not allow users to effectively conduct even using two-handed gestures. We propose novel input techniques of combining hand and foot gestures to enhance user interactions on tabletop environments. We have developed an early prototype of a sensorbased foot platform which recognizes subtle foot gestures, designed foot gestures and interactions which support simultaneous users' tasks and obtained their informal feedback.

This paper presents a design space, a fabrication system and applications of creating fluidic chambers and channels at millimeter scale for tangible actuated interfaces. The ability to design and fabricate millifluidic chambers allows one to create high frequency actuation, sequential control of flows and high resolution design on thin film materials. We propose a four dimensional design space of creating these fluidic chambers, a novel heat sealing system that enables easy and precise millifluidics fabrication, and application demonstrations of the fabricated materials for haptics, ambient devices and robotics. As shape-change materials are increasingly integrated in designing novel interfaces, milliMorph enriches the library of fluid-driven shape-change materials, and demonstrates new design opportunities that is unique at millimeter scale for product and interaction design.

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