Head and Body Pose Estimation using Ultrasound Sensing on Smart Glasses. - Ke Li 013; Robin Kips; Filippo Arcadu; Marek Schikora; John Ho; Chris Graf; Jim Chen; Xingxing Cai; Gawsalyan Sivapalan; Ariyan Zarei; Yan Deblangey (CHI Extended Abstracts, 2026)