Panasonic has a technology for transmitting data by human touch

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.
In one, for example, a person can hold a color-coded ball. When they touch a