I've been trying to convince my friends to consider investing in Li-Fi companies in the near future, however, one obvious question is how will this work in the dark? I know the lights have to be on in order for data to move, but could there be a light with an extremely dim bulb but still able to provide reasonable transfer rate? Or is Infared a possibility? Like for example having an Infared light next to the LED, and the Infared takes over when the light turns off.
ANY feedback is appreciated!