Design and Implementation of an IoT based Smart Door Lock System

The Internet of thing devices are interconnected physical objects that collect and share data over the internet. IoT has the potential to revolutionize many industries, including security. Traditional door lock systems have several limitations. They are often inconvenient to use, as they require users to carry keys or enter passcodes. They are also vulnerable to physical attacks, such as lockpicking or drilling. Additionally, traditional door lock systems cannot be controlled remotely, which can be a problem if a user is away from home or needs to grant access to someone else. The proposed IoT-based smart voice and keypad door lock system using Arduino overcomes the limitations of traditional door lock systems by providing a convenient, secure, and flexible way to unlock doors. The system uses three unlocking methods: voice control, fingerprint recognition, and keypad entry. Users can choose the unlocking method that best suits their needs and preferences. Voice control enables hands-free and efficient unlocking, while fingerprint recognition offers reliable and accurate access. Keypad entry provides a balance between accuracy and ease of use. The system successfully integrates these methods, offering a robust and flexible door lock system. The proposed system has the potential to significantly improve security in a variety of settings, including homes, offices, and public spaces. It offers a convenient, secure, and accessible way to unlock doors, meeting the diverse needs of users.