Biometric Door Lock Security System

Abstract

Our “Biometric Door Lock Security System” makes our lives smarter, easier, and more secure. The proposed system being controlled by a micro controller has made the project. In simple words, how the system operates is that we take power from the main lines and feed it to an SMPS to output a regulated DC voltage that is to be used to run the Node MCU. Here we will able to control our door with fingerprint. After recognizing the fingerprint we will be able to open this door very easily. When a person comes close to the door and scan his finger in fingerprint sensor then sensor sense fingerprint. If it is authorized finger then micro controller get a signal and this signal is sent to servo motor. Then servo motor will move and door will be open. After completing the project, we have put it to through several tests and although we did face some initial difficulties while making the project but at the end, the results we came up with from the test were quite satisfactory.