Bosu is a design tool offering kinetic memory�the ability to record and play back motion in 3-D space�for soft materials. It is used for motion prototyping and digitally augmented form finding, combining dynamic modeling with coincident sensing and actuation to create transformable structures. The system consists of varying modular units of bend sensors paired with shape memory alloy (nitinol) actuators woven into a bendable plastic frame and embedded in fabric. Each module can actuate between two positions and together form three-dimensional motion pixels.