Abstract: The OTP-Based Smart Wireless Locking System using Arduino is an innovative solution designed to enhance the security and convenience of traditional locking mechanisms. This system leverages the capabilities of Arduino microcontroller and wireless communication technologies to create a secure and user-friendly lock system that operates based on One-Time Password (OTP) authentication. To unlock the system, users need to generate an OTP using a designated mobile application. The OTP is securely transmitted to the central control unit via a wireless communication protocol such as Bluetooth. Upon verification of the OTP's validity, the central control unit sends the corresponding command to the designated wireless lock module, instructing it to unlock. The system incorporates several advanced features to enhance security and functionality. Firstly, the OTP ensures a higher level of security by utilizing unique passwords for every authentication attempt, minimizing the risk of unauthorized access. The OTP-Based Smart Wireless Locking System using Arduino offers a reliable, secure, and user-friendly solution for modern access control needs.

| DOI: 10.17148/IARJSET.2023.10691