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


int lockOutput = 13;
byte data_count = 0;

char key;




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 rPins[ROWS] = {9, 8, 7, 6};
byte cPins[COLS] = {5, 4, 3, 2};

Keypad keypad = Keypad(makeKeymap(keys), rPins, cPins, ROWS, COLS);
LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
  // put your setup code here, to run once:
lcd.init();
lcd.backlight();
pinMode(lockOutput,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
char key = keypad.getKey();

  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Enter Password: ");

}