‘Li-Fi’ – A plan to turn every lightbulb into an ultra-fast alternative to Wi-Fi

Li-Fi doesn’t work in the dark or outdoors, but it only has to be a supplement to existing wireless networks to be valuable.

The more popular wireless networks become the slower they are. Fudan University researchers in Shanghai have just become the latest to demonstrate a technology that transmits data as light instead of radio waves, which gets around the congestion issue and could be ten times faster than traditional Wi-Fi.

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