Ain't that the pits... I'm actually gonna have to wait for another customer in this crazy heat? That's harsh...

Since Li-Fi uses just the light, it can be used safely in aircrafts and hospitals that are prone to interference from radio waves.

There is no talking to such; no hope of their conversion; they are in a reprobate sense, meer carnalists, fleshly minded men

It is much more difficult when you are dealing with underground banking systems, hawalla systems, et cetera, when expatriate workers are trying to transfer money back home and there are no records or very little records to speak of.