#include <LiquidCrystal_I2C.h>
#include<Keypad.h>

LiquidCrystal_I2C lcd(0x27,16,4);

//Define collumn and row
const byte ROWS = 4;
const byte COLS = 4;

//Define the key map
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'},
};

// Connect to the row pinouts of the keypad
byte rowPins[ROWS] = {9, 8, 7, 6};
// Connect to the column pinouts of the keypad
byte colPins[COLS] = {5, 4, 3, 2}; 

//Create the keypad bjects
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

//Set password
String correctPassword = "2708";
String enteredPassword = ""

void setup  (){
  //Turn on LCD
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("Enter Your Password");}

void loop (){
  char key = keypad.getKey(); // Read the key

  if(key){
    if(key == '#''){
      if (enteredPassword == correctPassword){
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("Access Granted");}

      else{
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("Access Denied");
      }
    
  }