The modern world requires the implementation of security systems and structures because of the rise in theft and unauthorized access. Although most traditional locks have been in use for a long time, it is doubtful how long they will last against different types of attacks. For convenience, comfort, and security, the Smart Door Lock System with Light Fidelity (Li-Fi) technology was developed. Through visible light communication (VLC), this technology unlocks the door when a smartphone torch emits a specific on-off light pattern that is detected and decoded for access control On-Off Keying (OOK). The ESP32 microcontroller and a mobile application serve as the foundation for this low-cost, easily assembled, and eco-friendly solution. Its low latency, excellent reliability, and strong resistance to outside interference make it ideal for smart-home systems and secure facilities.
Chaluvaraju et al. (Sat,) studied this question.