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Li-Fi can be extremely high bandwidth.

https://en.wikipedia.org/wiki/Li-Fi

"It is so far measured to be about 100 times faster than some Wi-Fi implementations, reaching speeds of 224 gigabits per second."

I know that in practice, my colleague has tried it, and yes, in practice, it can work.

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Only works with line of sight though, not useful or practical when in most line sight situations you could just run a cable anyways, and not have to worry about potential interference.

Seems pretty practical for e.g. a docking station scenario - rather than connecting a cable, just toss your phone on the desk and it connects to your monitor/docking station.

There are multiple problems with LiFi. The most obvious being diffusion and diffraction as well as line of sight (you need a bright light very close to your device). But also LiFi relies on there being essentially zero power fluctuation in the actual lights. This might be possible in a tech demo where the lights were on for 5 minutes, but not for lights that have seen several months of use.

Not to mention that the power costs are immense (only a fraction of the power of LiFi is actually spent on data, the rest is actually powering an array of lights).

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