As everyone knows that the demand for insecurity can be finished by locks which can be with one or a few

keys, but for locking a big resource, wealth, and credit many locks are required. so the aim is to provide a

locking system that will give constantly security service by using a registered password. Micro-controller

based door locking system is designed using ARDUINO UNO wherein once the security code or password is

press, the door is opened and the concerned person is to allowed to access in the secured area.The main

purpose of research is to provide a smart solution to deal with these challenges and provide a feasible

solution.