Physical keys are the most natural way to lock or open a door, and everyone is familiar with it. Although the physical key is a well-proven and well-known technology, it is not without faults. For a lock, there can only be one unique key. Different keys are required for various locks. Carrying a big number of keys is also inconvenient. Smart locks are key-less door locks that let you unlock your door without having to use a real key. A smart lock is an electromagnetically lock that is meant to lock and unlock a door when it receives instructions from an authorized device and executes the authorization procedure using a cryptographic key.

This application were to build a modern, easy-to-use, smart
door lock that allows for accessible unlocking and adds convenience,
utility, and security to your home. It allows users to open their door
remotely via the accompanying Smart Lock mobile app.