How to build a safe using keypad | safe box using arduino |Arduino safe using a keypad 

#include char* password = "720"; // change the password here,just pick any 3 numbers int position = 0; 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] = {2,3,4,5}; byte colPins[COLS] = {6,7,8,9}; Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS ); int Lock = 11; void setup() { pinMode(Lock, OUTPUT); LockedPosition(true); } void loop() { char key = keypad.getKey(); if (key == '*' || key == '#') { position = 0; LockedPosition(true); } if (key == password[position]) { position ++; } if (position == 3) { LockedPosition(false); } delay(100); } void LockedPosition(int locked) { if (locked) { digitalWrite(Lock, LOW); } else { digitalWrite(Lock, HIGH); } }

Awesome invention mate well done 👏

👍👍👍👍👍👍🤜🤘

a real good one and im deffinetly subbing

thank you for helping me