Controlling access to the relay

Now that your fingerprint is stored in the sensor, you can build your first application using the hardware that we previously built. We are going to open or close the relay every time the sensor recognizes our fingerprint. The following is the complete code for this part, excluding the details about recognition functions:

// Libraries
#include <Adafruit_Fingerprint.h>
#include <SoftwareSerial.h>

// Function to get fingerprint
int getFingerprintIDez();

// Init Software Serial
SoftwareSerial mySerial(2, 3);

// Fingerprint sensor instance
Adafruit_Fingerprint finger = Adafruit_Fingerprint(andmySerial);

// Relay parameters
int relayPin = 7;
bool relayState = false;

// Your stored finger ID
int fingerID = 0;

// Counters
int activationCounter = 0;
int lastActivation = 0;

void setup() 
{

  // Start Serial
  Serial.begin(9600);

  // Set the data rate for the sensor serial port
  finger.begin(57600);

  // Check if sensor is present
  if (finger...