How do I change a variable password into a fixed one and cutting a wire starts the clock?

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Thanks John, that was it to make it happen! It works but I see another little thing now...can I skip the "Press # to arm" message and button? So that cutting the wire immediately starts the countdown?

Started to remove the

while (keycount == 12)
  {
    char armkey = keypad.getKey();

    if (armkey == '#')
    {
      tone(9, 5000, 100);
      delay(50);
      tone(9, 0, 100);
      delay(50);
      tone(9, 5000, 100);
      delay(50);
      tone(9, 0, 100);
      delay(50);
      tone(9, 5000, 100);
      delay(50);
      tone(9, 0, 100);
      lcd.clear();
      lcd.print ("Bomb Armed!");        // Je kan hier de tekst aanpassen tussen de "....."
      lcd.setCursor(0, 1);
      lcd.print("Countdown start");     // Je kan hier de tekst aanpassen tussen de "....."
      delay(100);
      lcd.clear();
      keycount = 0;
    }

but that doesn't do the trick that I need