I am curious about this technology. I was expecting the advances in Wi-Fi technology, however, anybody could imagine that the led lights will be the next data streaming resources. There are many concerns about the data streaming feature of the light including its potential impacts on the health. There are still grey points in my mind about how can be a complete synchronous data streaming in all over the world with the li-fi. This is truly the innovation. Congrats Prof. Harald Haas!!