ebbene sì , fate voi stessi ricerca su inet , usando come parole
Microsoft human body patent
etc

uno dei risultati può essere questo

http://news.com.com/Microsoft+patents+body+power/2100-1014_3-5244766.html

Estratto:
Microsoft has been awarded a patent for using human skin as a power conduit and data bus.

Patent No. 6,754,472, which was published Tuesday, describes a method for transmitting power and data to devices worn on the body and for communication of data between those devices.

In its filing, Microsoft cites the proliferation of wearable electronic devices, such as wristwatches, pagers, PDAs (worn on people's belts) and small displays that can now be mounted on headgear.

"As a result of carrying multiple portable electronic devices, there is often a significant amount of redundancy in terms of input/output devices included in the portable devices used by a single person," says the filing. "For example, a watch, pager, PDA and radio may all include a speaker."

To reduce the redundancy of input/output devices, Microsoft's patent proposes a personal area network that allows a single data input or output device to be used by multiple portable devices.

Personal area networks, or PANs, are nothing new. Some, such as Bluetooth, use radio signals, while others use infrared. Some work has been done on near-field intrabody communications--most notably by IBM's Almaden Research Labs, which at Comdex 1996 demonstrated a prototype device, which was about the size of a pack of playing cards, that let two people exchange electronic business cards by shaking hands.