Light-Fidelity is abbreviated as Li-Fi. Where
the technique is new and was introduced in 2011 by
Harald Haas, a physicist from Germany. Light Fidelity is
a form of wireless networking technology that uses LEDs
to transport data. Visible light communication, or VLC, is
an optical communication system that uses the visible
light as a medium to transmit data. Li-Fi is a type of lightbased bidirectional communication. Wireless Fidelity is
utilised for general cover in buildings, but Li-Fi is
suitable for wireless data transfer in tight spaces and is
very useful and beneficial where radio wave interference
is an issue.Light Fidelity has already achieved rates from
over 1 Gbps in the lab, outperforming Wi-Fi in terms of
bandwidth, efficiency, and connectivity. In this study, it
looks into the use of VLC with Li-Fi, which is a secure
way of transferring information wireless that is far more
secure than traditional Wi-Fi design.
Keywords : Li-Fi (Light Fidelity), Wi-Fi (Wireless Fidelity), VLC (Visible Light Communication), LOS (Line of Sight), LED (Light Emitting Diode), DDOS (Distributed Denial of Service), MITM (Man In The Middle).