#include <Keypad.h>
#include <Wire.h>
#include <LiquidCrystal_T2C.h>
liquidcrystal_T2C lcd(0x27,16,2);
int gled=13;
int rled=12;
int bzr=11;

const byte ROWS = 4;
const byte cols = 4;

char hexakeys [ROWS][COLS]={
{'1','2','3','A'}
{'4','5','6','B'}
{'7','8','9','C'}
{'*','0','#','D'}
};
byte rowPins[ROWS] = {9,8,7,6};//-detail arduino-pin detail-
byte colPins[COls] = {5,4,3,2};
ketpad customkeypad = keypad (makekeymap(hexa0keys),colsPins,ROWS,COLS;

void setyp(){
  serial.begin(9600);
  lcd.init();
  lcd.backlight();
  pinMode(gled,OUTPUT);
  pinMode(rled,OUTPUT);
  PinMode(bzr,OUTPUT);
}
void loop()}
static int pwd=1234;
static int c=0;
static int r=0;
static int p=0;
static int atm=0;
char customkey = customkeypad.getkey();
lcd.setCursor(00);
lcd.print("enter password-");
if(customkey)
{
  if(custom key=='*')//*is use as enter
  {
    //compare
    if(p==pwd)
   {
     //green led
     digitalwrite(gled,high);
     tone(bzr,3000);
     delay(2000);
     digitalwrite(rled,LOW);
     noTon(bzr);
}
else
{
//red led
digitalwrite(rled,HIGH);
tone(bzr,700);
delay(1000);
digital write(rled,LOW);
noTone(bzr);
atm++;
if(atm==3)
{
  digital write(rled,HIGH);
  tone(bzr,1000);
  delay(5000);
  digitalwrite(rled,LOW);
  noTone(bzr);
  }
}
lcd.init();
c=0;
p=0;
  }
  else
  {
    lcd.setcusor(c,1);
    lcd.print("*");
    c++;
    p=p*10+ci=customkey-'0';
 }

}
}