Universal authentication system for ACE

The Universal Authentication System for ACE is a digital permission and verification framework designed to replace traditional paper-based approval methods within ACE Engineering College. Conventional permission systems are often slow, unreliable, and lack transparency, leading to administrative inefficiencies and delayed student processing. The proposed system automates this workflow by enabling students to submit digital permission requests, which are sequentially approved by the Class Incharge and Head of Department (HOD). Upon final approval, a unique code is generated and verified by the security guard at the exit gate. Using Firebase for both authentication and database management, the system ensures secure access, real-time data updates, and seamless scalability. This survey examines prior research on digital permission management and related automation systems, identifies gaps in existing methodologies, and presents an integrated mobile-first solution leveraging Firebase and React Native to ensure transparency, security, and operational efficiency across institutional workflows.