More than it Seams: Garment Stitching in Wearable e-Textiles

Abstract: We consider how seams in clothing can be designed for interactive sensing of body movement. Conductive yarn is activated at low voltages which fluctuate as body movement varies tension across the seams. Traditional garment construction describes how fabrics, blocks and seam types are configured according to mechanical performance and historical changes in fashion. Bodice blocks span the human torso, anchoring and reflecting core body movement. We explore the stability and calibration of seam voltage in a bodice block, while performing a yoga-inspired movement sequence. Our exploratory studies test signal orthogonality between seam stitch types and seam placements for supporting reliable sensing. We use our exploratory work to consider design alternatives which balance seam requirements against sensing opportunities, including back seams for torso garments. Our findings contrast optimal seam placement and design in wearable e-textiles with those in traditional clothing.