Advanced Authentication System with Biometric and OTP Integration

In the modern digital era, traditional key-based locks are highly vulnerable to duplication and unauthorized access, necessitating advanced authentication mechanisms. This research proposes a dual-layer authentication system using a Raspberry Pi Pico, integrating facial recognition and a secure OTP mechanism to enhance security. The system first captures and verifies facial features against an authorized database. An OTP is generated using secure algorithms and transmitted via encrypted channels if authentication fails. The user enters this OTP on a keypad for secondary verification. Additional security measures include OTP expiration, limited authentication attempts, and encrypted data transmission, ensuring robust protection against unauthorized access. Furthermore, the system incorporates a GSM module for real-time OTP delivery, ensuring accessibility even in network-restricted environments. The relay module and electronic solenoid lock coordinate to provide seamless and automated door control. This system is designed for smart homes, offices, and high- security zones, offering a scalable and reliable solution for modern access control systems.