ABHINAB MONDAL; SURJADEEP DUTTA. Biometric Payment Systems in India – A Case Study of ThumbPay by Proxgy. Academic International Journal of Engineering Science, [S. l.], v. 3, n. 02, p. 51–55, 2025. DOI: 10.59675/E324. Disponível em: https://aijes.aipublishers.org/index.php/aijes/article/view/E324.. Acesso em: 27 nov. 2025.