Biometric Access Control System for Sequential Fingerprint with Enhanced Security Authentication
Abstract
Biometric-based access control systems are gaining popularity over traditional security methods such as keys orpersonal identification numbers (PINs), offering stronger protection for homes and organizations as a safer and smarter alternative. This research presents a sequential fingerprint authentication framework in which multiple biometric inputs must be verified in a predefined order to grant access. Unlike conventional single-fingerprint authentication systems, the proposed design transforms biometric authentication into a biometric passcode mechanism, requiring both correct identity and correct order of fingerprints. This additional layer significantly increases resistance to unauthorized access attempts while maintaining a low-cost embedded implementation suitable for practical access control applications. This solution is flexible and affordable, and it can be used in residential, commercial and industrial environments. By combining fingerprint authentication with sequential verification, the proposed system provides a robust, scalable and user-friendly security solution. The integration with Arduino and relay control further enhances its flexibility, making it a practical choice for modern smart security systems.
© 2026 Rashmi Ranjan Das, Deepika Rani Sona, Gouni Sai Bhavuktha Reddy, Araveti Greeshma, Rajula Balaji, published by Macquarie University, Australia
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.