The LVX system puts clusters of its light-emitting diodes, or LEDs, in a standard-sized light fixture. The LEDs transmit coded messages – as a series of 1s and 0s in computer speak( by flickering at a very high rate (about 1000s per second)) – to special modems attached to computers. A light on the modem talks back to the fixture overhead, where there is sensor to receive the return signal and transmit the data over the Internet. Those computers on the desks aren't connected to the Internet, except through these light signals, much as Wi-Fi allows people to connect wirelessly. These give a speed of about 3 megabits per second.
when would this come commercially in the market
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