#include "Keypad.h"
#include <Wire.h>
#include<EEPROM.h>
#include <LiquidCrystal_I2C.h>
#define buzzer 13
int led=11;
int led2=12;
LiquidCrystal_I2C lcd(0x27, 16, 2);
char okunan=0;
const byte satir = 4; //4 satir
const byte sutun = 4; //3 sutun
char password[4];
char pass[4],pass1[4];
int...