A Study on the Design of Portable Hand Exercise Toys for the Elderly Based on Multisensory Interaction. The Journal of Interactive Social Sciences, [S. l.], v. 2, n. 3, 2026. DOI: 10.64744/tjiss.2026.253. Disponível em: https://onlinejandl.com/index.php/TJISS/article/view/253. Acesso em: 22 jul. 2026.