This paper describes the use of light as a medium for bi-directional communication between two systems. It demonstrates transmission and reception of data between two systems bi-directionally that do not have any physical communication between them. This paper envisions a future where data for laptops, smart phones, and tablets is transmitted through the light in a room. It establishes a way for creating a communication medium that can transfer data with much higher speeds as compared to current wireless networks. The methodology used is the conversion of SERIAL-to-TTL (Transistor-Transistor-Logic), and vice versa. It takes input from the system (transmitter) and gives output in the form of TTL logic signals that ultimately drives the LED circuit, enabling it to glow, but actually it is transmitting data.