https://www.cnet.com/news/oledcomm-mylifi-internet-lamp/

A few years ago, engineers came up with an incredible, amazing idea. What if we could piggyback internet connectivity on the lights that fill our homes, offices and cities? Imagine it: anywhere the light touches, you could have internet. No more looking for finicky airport Wi-Fi. No more internet passwords. Best of all? You'd never have to worry about your neighbor stealing your Wi-Fi ever again.

In concept, the idea always worked, but we've never actually seen it in action. Until now. At CES 2018, we ran into Oledcomm's MyLiFi, a desktop lamp that, you guessed it, can beam the internet to your PC using lightwaves.