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The main objective of this paper is to unlock a hotel room door by using an android application using a password entered through the android application device. Opening and closing of hotel room door involves using of smart card. The opening and closing of hotel room door is achieved by using an android application. The owner can connect android application device to the system through Wi-Fi, which in turn is connected to a microcontroller controlled door that can open/close the door by entering the password. Remote operation is achieved by any smart-phone/Tablet, with Android OS, upon a GUI (Graphical User Interface) based touch screen operation. This paper is based on the android application, android application send data through Wi-Fi. Another Wi-Fi device connected at the receiving end which is fed to the microcontroller. The sent data (password entered by the user) matches with the password stored in the microcontroller, and then the microcontroller initiates a mechanism to open the door through a motor driver interface. The combination of Wi-Fi and android technology will satisfy timeliness, safety and involves elimination of smart card

Password Based Remote Controlled Door Opening Using Android Application