LiFi, also known as Light Fidelity or Visible Light Communication (VLC), is a wireless communication technology that utilizes light waves for high-speed data transmission. It uses light-emitting diodes (LEDs) to encode and transmit data, which is then captured and converted back into data by specialized receivers. LiFi offers advantages such as high-speed transmission and enhanced security. However, it requires direct line-of-sight and is typically used as a complementary technology in environments where traditional wireless communication is limited.