This document summarizes a research paper on biometric systems for authentication and security issues. The paper provides an overview of biometric systems and how they are used for authentication. It discusses some of the main types of biometrics like fingerprints, facial recognition, voice recognition, and others. It also covers authentication processes, including enrollment and verification. The paper analyzes security issues like spoofing attacks and discusses liveness detection techniques to help prevent spoofing. It evaluates biometric systems based on authentication accuracy and security. In conclusion, the paper argues that biometrics can provide secure authentication but that future research should focus on improving accuracy under non-ideal conditions and enhancing security against spoofing attacks.