Seldom enough I'm at Gizmode the last year - however this entry inspired me:

It creates a body area network (BAN) that lets you communicate with other peripherals by touching them. So for example, you could print documents from your PDA by touching a compatible printer or transfer files from your PDA by touching a computer.

Looks like touch is another element of the social interface. It's is a bit more direct like face2face communication is. What brings me to the next idea that we have to differ between mass, group and personal communication in the social interface too.

Via Gizmodo