Panasonic has developed a data transmission system that can exchange information through human touch.
The prototype human body communication device sends data at up to 100kbps through a radio field on a person's skin. When they touch an object or person with a suitable transreceiver, data can be exchanged.
 
The device is on show at this week's Ceatec electronics show in Japan through several color-coded demonstrations.

It could be used in future security systems, or as a way of exchanging contact information through a handshake