Due to increased usage, digital education platforms and online assessment systems require advanced identity verification techniques. Conventional authentication techniques frequently fail to maintain academic integrity during remote sessions. These flaws led to the emergence of biometric authentication methods. This review aims to explore the use of biometric authentication for online assessments in higher education. Global crises like the COVID-19 epidemic have expedited the trend to online learning and assessments, presenting questions about the security and integrity of these tests. The study is motivated by the expansion of online learning and the need for secure and reliable authentication techniques. The results indicate that biometric authentication does improve security and help prevent impersonation. However, it is important to tackle privacy-related issues, potential bias in algorithms, and the limitations in infrastructure. The study recommends guaranteeing long-term implementation, institutions should place a high priority on equity, openness, and inclusivity. Long-term effects require more investigation, particularly in developing countries with poor digital infrastructure.