2 Door 3 Password
In this model, we have developed a security system for a bank safe. Here we have introduced two doors and three passwords. The first door to the safe opens when a correct password is input. The second door gets opened by typing the password, on entering the correct password a message is sent to the bank manager stating the door is being opened. Further, the bank manager sends the user the correct password via message. If the correct password is dialed second will also open and the user can withdraw the required money from the bank safe. If a wrong password is entered after 2 or 3 tries then, the first door is closed and the user gets trapped inside the bank safe. Further, the bank manager receives a message stating a wrong password has been entered and takes further actions accordingly. In this system motors controlling the action of doors and GPRS sim300 contacting to bank manager both are connected to a microcontroller.