Multiple Laboratory Authentication System Design Using Fingerprints Sensor and Keypad Based on Microcontroller

Abstract

An authentication system is a process of verifying personal data from users who attempt to access a particular system. One example of authentication that is commonly used is biometric authentication. Biometric authentication possess a high complexity, so if biometric data is used as input, then there is little possibility of errors or forgery. In this study, we implemented a dual authentication system, namely biometric authentication in the form of fingerprints and passwords. The dual authentication system in the laboratory room is intended to improve the security system and facilitate the user in accessing the laboratory room. The experiment was carried out on a proportional small scale prototype consisting of input media in the form of a fingerprint sensor and keypad, an actuator in the form of a door lock solenoid controlled by a relay, and the output media in the form of an LCD and buzzer. By using the fingerprint sensor to scan each user’s unique fingerprint, we can commence the matching fingerprint data entered with the fingerprint data that has been recorded on the embedded system. After the fingerprint authentication process is completed, the password verification process will be continued with the input via the keypad. If the fingerprint and password authentication process is successful (valid), the system is able to open and close the room door automatically. The system takes approximately ± 0.62 seconds to alter the condition of the closed door to be opened, and ± 3.74 seconds to change the condition of an open door to be closed