Visible Light Communications
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Visible Light Communications, shortly VLC, is a next generation communications media using visible light between 400T Hz and 800T Hz, that is safe for your eyes.
It uses ordinary fluorescent bulb or LED to transmit signals. When using fluorescent bulb, it can send information 10 kbit/s, and if LED, 10 Mbit/s.
Specially designed electronic devices receive signals from such light source.
This technology can be used as communications media for ubiquitous computing, because lights are put everywhere.
[edit] History
First started at Nakagawa Laboratory, in Keio University in 2003.
