To meet the new difficulties and present needs and provide positive results, the majority of systems are automated nowadays. Automated systems are more flexible and precise since there are fewer manual procedures. Therefore, every file prefers the automated control system, especially in electronics. The project objective is to create a unique system using mobile technology that can control the door just by entering the password as a message which opens/closes the door. This project also presents a low-cost security system that is widely used in our everyday life. It is designed to prevent unauthorized persons from opening/closing the door by entering the correct password. The password entry system will open the door lock once the user enters the right password, and the door lock will open. Traditional locks are heavy and not very protective as they can easily be broken down by some tools. Therefore, electronic locking systems are preferred over mechanical locks. The door is opened and closed by this method using Android technology.