Artificial intelligence is a way of making intelligent machines which can behave like a human so it can able to make decisions. AI is making our lifestyle easier and fast. It is becoming essential for today's time because it can solve complex problems with an efficient way in multiple industries, like healthcare, entertainment, finance, education, etc. Artificial Intelligence has various applications in today's society. Some of the applications of AI include Expert systems, Natural Language Processing, Vision systems, Speech Recognition, Intelligent Robots, Authentication by Biometric verification. AI system can be used in conjunction with the traditional forms of biometrics. Biometrics identifies and authenticates individuals based on their physical or behavioural characteristics. Biometric recognition offers well a promising approach for security applications. The emerging biometrics based identification and authentication technology is applicable in Banking security, ATM security, E-commerce etc. In this paper different types of biometric authentication methods that used as personal identifying factors are discussed.