Using Sparkfun's Fingerprint Scanner - 5V TTL (GT-511C1), a servo motor, and some LEDs, a code that allows you to move the servo based on the validity of the fingerprint.

Fingerprint Scanner Code–Final Project (Pauline Unietis)

// Sweep code by BARRAGAN http://barraganstudio.com/
// Blink code from Arduino examples
// PWM Servo library from http://arduiniana.org/libraries/pwmservo/
// Fingerprint Scanner library, partial fingerprint identity test, along with hardware help from:
// http://wordpress.hawleyhosting.com/ramblings/?p=375
// Code help from Ms. Natalie Freed

#include "FPS_GT511C3.h"
#include "SoftwareSerial.h"
#include <PWMServo.h>

PWMServo myservo;
int pos = 60;

const int yellow = 13;
const int green = 12;
const int red = 11;

FPS_GT511C3 fps(3, 2);

void setup()
{
  Serial.begin(9600);
  delay(100);
  
  fps.Open();
  fps.SetLED(true);
  
  myservo.attach(SERVO_PIN_A);
  myservo.write(pos);
  
  pinMode(yellow, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(red, OUTPUT);
  digitalWrite(red, HIGH);
  digitalWrite(yellow, LOW);
  digitalWrite(green, LOW);
}

void loop()
{

  if (fps.IsPressFinger())   // fingerprint identity test
  {
    digitalWrite(red, HIGH);
    digitalWrite(yellow, LOW);
    digitalWrite(green, LOW);
    myservo.write(60);
    fps.CaptureFinger(false);
    int id = fps.Identify1_N();
    
    if (id <200) // if the fingerprint is correct
    {
      myservo.write(pos);
      Serial.print("Verified ID:");
      Serial.println(id);
      for(pos = 60; pos < 90; pos += 1) // servo moving
      {                                 
        myservo.write(pos);             
        delay(250);                       
        if (pos == 60)  // LEDs
        {
          digitalWrite(red, HIGH);
          digitalWrite(yellow, LOW);
          digitalWrite(green, LOW);
        }
        if (pos < 75)
        {
          digitalWrite(red, LOW);
          digitalWrite(yellow, HIGH);
          digitalWrite(green, LOW);
        }
        if (pos >= 75)
        {
          digitalWrite(red, LOW);
          digitalWrite(yellow, LOW);
          digitalWrite(green, HIGH);
        }    
      } 
      digitalWrite(red, HIGH);
      digitalWrite(yellow, LOW);
      digitalWrite(green, LOW);
      pos = 60;
      myservo.write(pos);
    }

    else
    {
      Serial.println("Finger not found");
    }
  }
  else
  {
    Serial.println("Please press finger");
  }
  delay(100);

}

Can i use FPS_GT511C3.h library for FPS GT-511C1 and does it works?