International Journal On Engineering Technology and Sciences – IJETS™ ISSN(P): 349-3968, ISSN (O): 2349-3976 Volume X, Issue III, March - 2023 77 LIFI DATA TRANSFER IN MOBILE COMMUNICATION Abstract: This abstract addresses about way to transfer data titled LiFi (Light Fidelity) which uses light waves to transmit data wirelessly. LiFi communicates data using visible light instead of radio waves like regular wireless communication systems do. By providing high-speed data transfer and being more safe and reliable than current wireless communication technologies, this technology has the potential to revolutionize wireless communication. The modification of light waves to convey data is the fundamental premise of the LiFi data transfer principle. An LED (Light Emitting Diode) light source is used to convey the encoded data, which may then be detected by a light detector at the receiving end. It is possible to create a low-cost wireless communication system for displaying text messages using LiFi technology and an Arduino board. The text message is modulated onto the light waves emitted by the LED light source, which are then detected by the photo detector which is in LDR connected to the Arduino board. To display the text message on an LCD screen, a custom programme built in the Arduino programming language is used to process the received data. This technology has the potential to improve wireless communication in a broad range of applications including data transfer in hospitals and other places where radio waves are prohibited, as well as indoor communication systems. Keywords: LDR Module (Light Dependent Resistor),Indoor positioning, Radio waves, light waves,Revolutionize wireless communication. Introduction: Light-Fidelity is typically referred as Li-Fi. Over time, the importance of relying on Wireless Fidelity (Wi-Fi) for data transfer made it necessary to find an other, more trustworthy form of communication, which led to the development of LightFidelity (Li-Fi). A. Shakeela Joy and R. Ravi (2021) proposed using metrics like detection rate, latency, and throughput for varied numbers of rounds to analyse ECC-based authentication schemes [1].The innovation is extremely recent, and the German physicist Harald Haas made the proposal in 2011.Li-Fi uses an LED light bulb whose intensity changes faster than the human eye can keep up to transmit data through illumination. We shall go into great detail about the technology in this paper, as well as how Li-Fi can take the role of Wi-Fi. U. Muthuraman, J. Monica Esther, R. Ravi, R. Kabilan, G. Prince Devaraj, and J. Zahariya Gabriel (2022) future data analysis will be based on statistics gathered with the aid of sensors and will be implemented as a webapp [2].While Li- Fi is suitable for high density wireless data coverage in restricted spaces without barriers, Wi-Fi is useful for general wireless coverage within buildings. Light emitting diodes (LEDs) are used in the wireless optical networking technology known as Li-Fi to transmit data..M. Masthan Sabitha.R Electronics and Communication Engineeering Cyber Forensics Applied Lab Student Francis Xavier EngineeringCollege, Tirunelveli sabithar.ug.21.ec@francisxavier.ac.in Sowndaryaa.M Electronics and Communication Engineering Cyber Forensics Applied Lab Student Francis Xavier EngineeringCollege Tirunelveli sowndaryaam.ug.21.ec@francisxavier.ac.in Sobana Devi.T.S Electronics and Communication Engineering Cyber Forensics Applied Lab Student FrancisXavier Engineering College Tirunelveli sobanadevits.ug.21.ec@francisxavier.ac.in Dr. R. Ravi Prof/Director of Computer Science and Engineering Cyber Forensics Applied Lab In Charge Francis Xavier EngineeringCollege Tirunelveli fxhodcse@gmail.com