Mobility-Based Smartphone Digital Phenotypes for Unobtrusively Capturing Everyday Cognition, Mood, and Community Life-Space in Older Adults: Feasibility, Acceptability, and Preliminary Validity Study. - Hackett, Katherine; Xu, Shiyun; McKniff, Moira; Paglia, Lido; Barnett, Ian; Giovannetti, Tania (JMIR Human Factors, 2024)