Deep Pressure Therapy relies on exerting \textit{firm touch} to help individuals with sensory sensitivity. We performed first-person explorations of deep pressure enabled by shape-changing actuation driven by breathing sensing. This revealed a novel design space with rich, evocative, aesthetically interesting interactions that can help increase breathing awareness and appreciation through: (1) applying symmetrical as well as asymmetrical pressure on the torso; (2) using pressure to direct attention to muscles or bone structure involved in different breathing patterns; (3) apply synchronous as well as asynchronous feedback following or opposing the user's breathing rhythm through applying rhythmic pressure. Taken together these explorations led us to design (4) \textit{breathing correspondence interactions} -- a balance point right between leading and following users' breathing patterns by first applying deep pressure -- almost to the point of being unpleasant -- and then releasing in rhythmic flow.
https://doi.org/10.1145/3411764.3445533
The ACM CHI Conference on Human Factors in Computing Systems (https://chi2021.acm.org/)