Bio-metrics using our physical characteristics to verify our identity. What has been advertised on the market is that it improves security level and make user experience much more simple. While at the same time, we also hear the opposite voice, from time to time, about the failure of the technology and the risk of using it. In this article, I aim to summarize the research findings to understand the actual benefit and risk of bio-metrics and what what are the key hurdles for implementing biometrics in end-consumer products. TechTarget defined Biometric payment as a point of sale (POS) technology that uses biometric authentication to identify the users and authorize the deduction of funds from a bank account. Fingerprint payment, based on finger-scanning, is the most common biometric payment method. As the authentication involved physical characteristics (e.g. fingerprint; voice; pupil etc), there certainly need a “point” on which the “S...