Fingerprint Recognition Experiment

Objective

This experiment demonstrates how to use a fingerprint sensor to recognize and authenticate users based on their fingerprints.

Components Required

Working Principle

The fingerprint sensor captures a user's fingerprint and matches it with pre-stored fingerprints in memory to authenticate the user.

Circuit Diagram

Fingerprint Circuit Diagram

Code

/*
 * Fingerprint Recognition Experiment
 * This code authenticates users based on fingerprint recognition using the fingerprint sensor.
 */

#include 
#include 

SoftwareSerial mySerial(2, 3);
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);

void setup() {
  Serial.begin(9600);
  mySerial.begin(9600);
  if (finger.begin()) {
    Serial.println("Fingerprint sensor initialized.");
  } else {
    Serial.println("Fingerprint sensor not detected.");
  }
}

void loop() {
  int fingerID = finger.getFingerprintID();
  if (fingerID >= 0) {
    Serial.print("Fingerprint ID: ");
    Serial.println(fingerID);
  } else {
    Serial.println("No fingerprint detected.");
  }
  delay(1000);
}

Results

The serial monitor will display the fingerprint ID if the fingerprint is recognized, or a message indicating no fingerprint was detected.

Applications