In this paper, we refect on the applicability of the concept of trajectories to soma design. Soma design is a frst-person design method which considers users' subjective somatic or bodily experiences of a design. Due to bodily changes over time, soma experiences are inherently temporal. Current instruments for articulating soma experiences lack the power to express the efects of experiences on the body over time. To address this, we turn to trajectories, a well-known concept in the HCI

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... , as a way of mapping this aspect of soma experience. By showing trajectories through a range of dimensions, we can articulate individual experiences and diferences in those experiences. Through analysis of a set of Permission to make digital soma experience designs and a set of temporal dimensions within the experiences, this paper demonstrates how trajectories can provide a practical conceptual framing for articulating the temporal complexity of soma designs. CCS CONCEPTS • Human-centered computing → Interaction design process and methods.