Abstract:

This project focuses on developing a design model for an alarm system based on fingerprint laser security. Installation and accessibility of fingerprint laser security alarms are challenging, limited only to the ultra-wealthy. The objective of this undertaking is to create a security system utilizing lasers, a fingerprint sensor, and an LDR (Light Dependent Resistor). Why Opt for Lasers? Laser beams possess the remarkable capability to travel considerable distances without dispersing, making them suitable for integration into security systems. In this analysis, we examine the light source using the LDR sensor. Our project additionally employs a fingerprint scanner to grant access to registered users. By utilizing these components, we design a security system incorporating fingerprint recognition and laser technology. A laser diode emits a continuous laser beam that consistently impinges upon the LDR sensor. When an unauthorized individual crosses its path, the laser is obstructed from reaching the LDR, causing the sensor to produce a low value. The controller detects this value, activating the buzzer and transmitting an alert to the user. Upon successful authentication of an authorized person's fingerprint, the laser deactivates, and the lock opens temporarily for a few seconds to allow for resumed operation

Description:

Fingerprint sensor, LDR, Laser, Buzzer