PUPIL-BASED HEART MONITORING: INFERRING HRV FROM SMARTPHONE UNLOCK BEHAVIOR. International Journal of Engineering Research and Science & Technology, [S. l.], v. 21, n. 2, p. 952–961, 2025. DOI: 10.62643/ijerst.2025.v21.i2.pp952-961. Disponível em: https://ijerst.org/index.php/ijerst/article/view/817. Acesso em: 12 aug. 2026.