Abhinab Mondal, Surjadeep Dutta. Biometric Payment Systems in India – A Case Study of ThumbPay by Proxgy. Aca. Intl. J. E. Sci [Internet]. 2025 Nov. 20 [cited 2025 Nov. 27];3(02):51-5. Available from: https://aijes.aipublishers.org/index.php/aijes/article/view/E324