Remotely Accessible Smart Lock Security System with Essential Features

A robust door lock system is the first and foremost thing to assure security to a home/building. Due to the ever-increasing responsibilities and daily tasks, people spend most of the time away from their homes. In such situations, identifying a visitor and getting remote access to their home is indispensable. A smart door lock which can be completely monitored and controlled from a remote location using an android application on a smartphone is proposed in this paper. When a visitor presses a calling bell/push button at the door, a Raspberry Pi with HD camera gets powered up and notifies the owner with a message and streams visitors' live identity on owner's mobile over the Internet. The owner, based on his willingness, can easily open/close the door remotely by entering a password that was preset. In addition, he can also convey an audio message to the visitor by entering the corresponding text in his smartphone app. The proof of concept provided in this paper emphasizes the real-time remote accessibility in the owner's hand (smartphone) on an interactive Graphical User Interface (GUI) over a cloud server.