Revolutionizing Home Security: One-Time Password Integration in Smart Door Lock Systems

In today's world, home security has become more important than ever before. This paper introduces a unique solution to this problem—integrating one-time passwords (OTPs) into smart door lock systems. Unlike static passwords, OTPs are unique for every access attempt, reducing the risk of unauthorized breaches. This innovative approach is cost-effective and compatible with multi-factor authentication, making it an ideal choice for residential security. The system operates efficiently, requiring only an ESP32 and a device capable of receiving emails, i.e., a smartphone or a laptop. By embracing dynamic authentication mechanisms, we can address the challenges of home security and ensure the safety of our homes in the digital age. This system can also be administered in other corporate and public sectors where limited access is needed. This approach also contributes to the achievement of Sustainable Development Goals 9 and 11, fostering innovation and creating sustainable cities and communities.