The technology that uses light to send and receive data wirelessly over short distances is known as Li-Fi, which stands for 'Light Fidelity'. Li-Fi transmits data through visible, ultraviolet, and infrared light, offering potentially faster speeds than traditional Wi-Fi. By utilizing LED lights and photodetectors, Li-Fi can create high-speed data connections in environments where radio frequencies are less effective or prohibited. This technology can enhance data transmission capabilities in settings like offices, hospitals, and public spaces.