"Researchers from NTT Docomo Multimedia Labs and NTT Microsystem Integration Labs in Japan have demonstrated a 10-megabits-per-second indoor network that uses human bodies as portable Ethernet cables.
The network, dubbed ElectAura-Net, is wireless, but instead of using radio waves, infrared light, or microwaves to transmit information it uses a combination of the electric field that emanates from humans and a similar field emanating from special floor tiles."

"ElectAura-Net also provides indoor positioning, which is urgently needed for "ubiquitous" communication. ElectAura-Net provides both broadband wireless(-like) networks and a meter-accuracy positioning system for indoor use. It is a kind of "intrabody communication" system that uses electric fields as transmission media, and the human body and floor as an Ethernet cable."