"Fundamentals of Molecular Nano-Communication Networks" , 5G, Intra-body Nano Network, LED Street Lights, Internet Of Bodies, Internet Of Nano-Things.... - Prof. Ian F. Akyildiz (DARPA)
"visible light communication (VLC) LED-based lamp to send a message to the human brain using the eye retina as a relay node. In fact, the eye and the brain can be seen as a natural VLC receiver"
2016 Injectable computers can broadcast from inside the body, a variety of sensors that can fit inside the human body, made possible by several breakthroughs in ultra-low power computing.