This document describes a fingerprint-based door access system using an Arduino. The system uses a fingerprint sensor integrated into the door to identify users and an Arduino microcontroller to control door locks/latches. If a matching fingerprint is detected, the microcontroller will unlock the door. If an unknown fingerprint is detected multiple times, the system will alert the owner and enter a secure mode. The system provides secure access control but has the disadvantage of higher cost compared to traditional locks.

1. Fingerprint Based Door Access System using Arduino
MAHATMA GANDHI INSTITUTE OF TECHNOIOGY
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
MR.K.N.MALLESH SIR
G MANOJKUMAR
RAHEEQ REHAN

2. ABSTRACT
This project includes a smart and affordable door lock enhanced with a fingerprintinterface.
For implementing this project, we will be using the Atmel Atmega328p, a fingerprintsensor, gsm
module, motor driver, a motor and some other hardware devices. The fingerprintsensor will be
integrated in the door panel, facing outer side of the door, so that people can’thave access to the
controlling system from outside. The latches will be fixed inside the doorpanel, so that the
thickness of the door can help the latch’s strength. We’ll use a few latcheswithin the panel to divide
the force among them if tried to force in. The fingerprint sensor willtake the fingerprint of the user
and forward it to the microcontroller to match with its records.If the print matches with one of
the fingerprints of the microcontroller’s memory, themicrocontroller will lock or unlock the
latch, based on its current state. If the fingerprint isforeign to the microcontroller, the buzzer will
buzz and the user will have to try again. If wrongfingerprints are tried 5 times at large, the system will
inform the owner to alert him/her about abreak in. The system will also go into a secure state where it
will continue to buzz the buzzer toalert the neighbours that something is wrong. The system

3. ARDUINO

4. Fingerprint door lock system

5. Block diagram

6. .B

7. IC AT89S52

8. Features

9. FINGERPRINT MODULE

10. S

11. APPLICATION

12. ADVANTAGES
DISADVANTAGE
• It’s very costly