#include <Keypad.h>

const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {9, 8, 7, 6};
byte colPins[COLS] = {5, 4, 3, 2};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

String password = "12345";
String enteredPassword = "";

void setup() {
  // put your setup code here, to run once:
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
char key = keypad.getKey();
  if (key != NO_KEY) {
    if (key == 'A') {
      enteredPassword = "";
      digitalWrite(12, LOW);
      digitalWrite(13, LOW);
    } else {
      enteredPassword += key;
      if (enteredPassword.length() == 5) {
        if (enteredPassword == password) {
          digitalWrite(12, HIGH);
        } else {
          digitalWrite(13, HIGH);
          enteredPassword = "";
        }
}
}
}
}