NFC (Near Field Communication) was already a protocol for very close communication:

It enables the user to exchange all kinds of information, in security, simply by bringing two devices close together. Its short-range interaction over a few centimeters greatly simplifies the whole issue of identification, as there is less confusion when devices can only "hear" their immediate neighbors.

Now there is RedTacton, which according to Taipei Time/The Guardian allows to send data over the surface of the skin at speeds of up to 2Mbps. The backbone could now be used as a broadband personal network.

Using RedTacton-enabled devices, music from an MP3 player in your pocket would pass through your clothing and shoot over your body to headphones in your ears. Instead of fiddling around with a cable to connect your digital camera to your computer, you could transfer pictures just by touching the PC while the camera is around your neck. And since data can pass from one body to another, you could also exchange electronic business cards by shaking hands, trade music files by dancing cheek to cheek, or swap phone numbers just by kissing. (...) It doesn't need transmitters to be in direct contact with the skin -- they can be built into gadgets, carried in pockets or bags, and will work within about 20cm of your body. RedTacton doesn't introduce an electric current into the body -- instead, it makes use of the minute electric field that occurs naturally on the surface of every human body. A transmitter attached to a device, such as an MP3 player, uses this field to send data by modulating the field minutely in the same way that a radio carrier wave is modulated to carry information. (...) An intriguing possibility is that the technology will be used as a sort of secondary nervous system to link large numbers of tiny implanted components placed beneath the skin to create powerful onboard -- or in-body -- computers.

Why do I blog this? vow that's the future, cyberpunk scifi is very close!