Visible Light Communication (VLC) is a technology that uses light to transmit data. It works by modulating the intensity of light emitted from sources like LEDs to send information. This method can be used for wireless communication, similar to how Wi-Fi operates, but it relies on visible light instead of radio waves. VLC has several advantages, including high data transfer rates and improved security, as light cannot penetrate walls. It is particularly useful in environments where radio frequency communication may be restricted, such as in hospitals or aircraft. As technology advances, VLC is gaining attention for various applications, including indoor navigation and smart lighting systems.