Door protection with password

1#include <Keypad.h>
2
3const byte ROWS = 4; //four rows
4const byte  COLS = 4; //four columns
5//define the cymbols on the buttons of the keypads
6char  hexaKeys[ROWS][COLS] = {
7  {'1', '2', '3', 'A'},
8  {'4', '5', '6', 'B'},
9  {'7', '8', '9', 'C'},
10  {'*', '0', '#', 'D'}
11};
12byte rowPins[ROWS] =  {10 , 9, 8, 7};
13byte colPins[COLS] = {6, 5, 4, 3};
14
15
16Keypad customKeypad  = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
17//char customKey;
18int  x = 0; //      byte
19char password[8];
20int i; //        byte
21#include <LiquidCrystal.h>
22LiquidCrystal  lcd(A0, A1, A2, A3, A4, A5);
23int opendoor = 12;
24int closedoor = 11;
25int  buzzer = 2;
26void setup() {
27  pinMode(11, OUTPUT);
28  pinMode(12, OUTPUT);
29  pinMode(2, OUTPUT);
30  Serial.begin(9600);
31  lcd.begin(16 , 2);
32  // x=0;
33}
34
35void  loop() {
36  lcd.setCursor(0, 0);
37  lcd.print("enter password    ");
38  lcd.setCursor(0,  1);
39  for (i = 0; i <= 7; i++) {
40    password[i] = customKeypad.waitForKey();
41    lcd.print("*");
42    //delay(2000);
43    //lcd.clear();
44  }
45  lcd.setCursor(0,  0);
46  if (password[0] == '2' && password[1] == '5' && password[2] == '8' && password[3]  == '0' && password[4] == 'A' && password[5] == 'B' && password[6] == 'C' && password[7]  == 'D') {
47    lcd.clear();
48    //delay(20);
49    lcd.print("  access          ");
50    digitalWrite(11, LOW);
51    digitalWrite(12, HIGH);
52    delay(1500);
53   //                          digitalWrite(2, HIGH);
54    tone(buzzer,500,2000);
55    delay(1000);
56    digitalWrite(12, LOW);
57    digitalWrite(11, HIGH);
58    delay(300);
59    digitalWrite(12, LOW);
60    digitalWrite(11, LOW);
61    // digitalWrite(11, HIGH);
62    // digitalWrite(12, LOW);
63   //                          digitalWrite(2,  LOW);
64    noTone(buzzer);
65    lcd.clear();
66    delay(1000);
67    //lcd.print("enter  password    ");// 
68  }
69  else {
70    lcd.clear();
71    //delay(20);
72    lcd.print(" access denied    ");
73    digitalWrite(12, LOW);
74    digitalWrite(11,  LOW);
75
76    x++;
77    if (x >= 2) {
78      tone(buzzer, 500 , 2000);
79      delay(1000);
80      noTone(buzzer);
81      delay(600);
82
83    }
84
85    delay(2000);
86    lcd.clear();
87  }
88}
89