Abstract :

The proposed system presents a Raspberry Pi–based Smart Fingerprint Authentication and Security System that enhances access control through biometric verification, image monitoring, and automated alert generation. Biometric security has become one of the most reliable methods for personal identification due to its uniqueness and resistance to replication. In this project, a Fingerprint Sensor Module (FPS) is interfaced with a Raspberry Pi 3B+, along with a USB camera, SD card storage, and a relay-controlled lock mechanism. The system authenticates users by capturing and matching fingerprints stored in the local database. When a valid fingerprint is detected, the Raspberry Pi activates the relay to unlock the door or device. Simultaneously, the USB camera captures an image of the authenticated user, which is saved locally for future reference and auditing. If an unauthorized or unmatched fingerprint attempt is detected, the system switches to an intrusion-detection mode. The USB camer