LiFi
Data is transmitted via light
You could have streetlights transmit data to cars.
Since you just need the light to be on or off, you can transmit binary bits.
The rate at which lights can flicker is so fast, that the human eye can’t perceive it!
However LiFi technology is an idea that gained popularity I think about four or five years ago. It might be a bit before it becomes a new breakthrough technology!
