Good article about Li-Fi, thank you. In the section on advantages, you mentioned that Li-Fi isn’t susceptible to RF interference, which is true, but it is susceptible to interference from other light sources. In your section on “Cons,” you mentioned interference from sunlight, which makes some engineering challenges for outdoor environments, but there can also be interference from light sources indoors. Nevertheless, I believe, like you do, that it will soon be a common and very useful medium for digital communications.