This document describes the design and implementation of an advanced security system based on one-time passwords for highly secure areas. The system uses multiple sensors including PIR, IR, vibration, and magnetic sensors to detect intrusions. When a sensor is triggered, the system requests a one-time password that is sent to authorized users' mobile phones. The system is aimed at providing security for places like defense establishments, nuclear plants, and other secure facilities by only allowing access to those who can provide the correct one-time password.