#include <Servo.h>
#include <Keypad.h>


Servo doorLock;
Keypad customkeypad = Keypad makeKeymap,(Keypad), rewind,;  // Declare the keypad object
const int servoPin = 10;  // PWM pin for the servo
// ... rest of the code ...
const char* password = "1999";  // Your desired password

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] = {1, 9, 9, 9};
        byte colPins[COLS] = {1, 9, 9, 9};
      
        String enteredPassword = "";
       
       void setup() {
          Serial.begin(9600);
          }

          void loop(): {
            char key = customkeypad.getKey();
          

                  if (key) {
                        enteredPassword(key);
                          }
                          
                          void enteredPassword(char key) 
                              static int index = 0;
                          
                                if (key == password[index]) {
                                    index++;
                                        if (index == sizeof(password) - 1) {
                                              // Password is correct, do something (e.g., unlock the door)
                                                    Serial.println("Access granted!");
                                                          // Reset the index for the next attempt
                                                                index = 0;
                                                                    }
                                                                       else {
                                                                          // Incorrect key, reset the index
                                                                              index = 0;
                                                                                }
                                                                                }
                          }