Conductive bodypaint

Allowing for a seamless integration of between human skin and electronics, conductive bodypaint provides the next step towards the future.
Quoted from nextnature.net:
As our lifes are increasingly regulated by electronics and there is a drive towards the miniaturization and portability of electronics on and around the body it seems only logical to place electronic circuits on the surface of body.
How about a conductive ink that is applied directly onto the skin to bridge the gap between electronics and the body. The material allows users to create custom electronics and interact with technology through intuitive gesture. It also allows information to be sent on the surface of the skin from person to person or person to object.
Wow. The possibilities are limitless, though being water soluble is a hurdle that needs to be overcome.

Cool. I want earphones based on this.
I want *tatts* based on this!
If nothing else, for wired connection to-and-from handheld gadgets (yes, phones too) – though eventually for interesting sexual uses, I’m sure.
@Cat Vincent
Re: Tats – hence the need to change the formula, slightly. As for the sexual, someone will do that! :)
@KBlack – earphones would just be the begining.
Next: Intimacy as circuit bending. Flexible and adhesive components connected with conductive paint would make for a nicely modular design.
(Of course this means sex may sound a lot like old prog rock intros for a while, but ain’t nothing wrong with that.)
You could have circuits on the palm of your hand, and pushing down a different finger completes a different circuit, or extends a given circuit. With a device to alter the pitch of a sound wave output dependant on resistance, it could be like playing a trumpet
I don’t think water solubility is necessarily a problem – more a choice.
Were I going out and I wanted a certain design to complement my power needs on that particular night – Halloween, party, gig, whatever – I’d gladly do the design of the circuits to complement my fashion and power/data needs.
[Of course, I still want various things under my skin to be constantly going but that's a little way off...yet. :)]
i wonder if you use the machine constantly if it’d burn calories by forcing the body to create more bio electric current