Security is a major concern in our day to day life, and digital locks door keys have became an important part of these security systems. One such security keys door lock is imitated in this project using arduino board and a matrix keypad. 

here are many objective that can obtain which is to increase the security level to prevent an unauthorized unlocking of the door especially in working place.


Next, can give the flexibility to the user to change or reset the password by using microcontrollers and the keypad in case the user forgets that combination.


Also can unlock the keys door by using the password and automatic lock when the door are close.


Lastly, to give user more secure yet cost-efficient way of key door locking system.