Designing an Affective Mobile Probe to Measure Smile Dynamics in Depression. - Nelson Hidalgo Julia; Robert Lewis; Craig Ferguson; Joshua Angulo Lopez; Hahrin Jung; Rosalind W. Picard; Simon Goldberg; Raquel Tatar; Wendy S.-Y. Lau; Caroline Swords; Christine D. Wilson-Mendenhall; Gabriela Valdivia; et al. (CHI, 2026)