Password Based Smart Door Lock System for Enhanced Security

Abstract

In this progressively insecure world today, there is indeed no going back into using old-fashioned keys and locks. That is because keys can get lost, stolen, or even duplicated and leave homes or offices vulnerable. This is why this project aims at building a Smart Doorlock System that uses a password instead of a key, simple and added security. In fact, this entire system would be powered by a small yet very sturdy microcontroller known as the ESP8266. It can do the locking process alone, and it is also base to future online access system. For example, in this manner, to unlock the door, the user needs to enter a password into the keypad. If the password is correct, a relay switches on a solenoid lock and the opening of the door takes place; if incorrect, the door is locked always by the system-and we can even add some features like alarms or mobile alerts later. A small LCD display would also be used for messaging purposes, such as "enter password" and "access denied," which would keep the user updated on the occurrence in the system. It is cost-effective and extremely easy to build, making it an irresistible option for anyone who wishes to increase the safety of their residence or experiment with technology toward a smart home. Overall, smart lock project combines security, simplicity and future promises. This is a modern way of keeping things under lock and key, and not having to carry keys around anymore. This can be a home, office, or even a school locker.