Security has played a key role in many of our places such as offices, institutions, libraries, laboratories, etc. to keep our data confidential so that no other unauthorized person can have access to them. Nowadays, in every moment, we need security systems for the protection of valuable data and even money. This article presents a fingerprint opening system that provides security that can be used by many banks, institutes and various organizations, etc. There are other methods of verifying authentication through password, RFID, but this method is more efficient and reliable. To provide perfect security to bank lockers and to make work easier, this project is taking the support of two different technologies viz. EMBEDDED SYSTEMS and BIOMETRICS. Unauthorized access is prohibited by designing a lock that stores the fingerprints of one or more authorized users. The fingerprint is detected by the sensor and is validated for authentication. If the fingerprint matches, the door will open automatically otherwise the buzzer connected to an audio amplifier will be activated so that people close to the surroundings get an alert.