This document describes a fingerprint-based door lock system designed under the guidance of Dr. Manish Tiwari. The system uses an Arduino, fingerprint sensor, solenoid lock, LCD display, relay, and buzzer. It is intended to provide access only to authorized persons via fingerprint authentication while sounding an alarm for unauthorized access attempts. The system stores fingerprints and matches them to the fingerprint sensor to open the lock. If an unauthorized fingerprint is detected more than five times, the buzzer will continuously sound to alert others.