Thin, Flexible Printable Battery For Smartcards
cornflux writes "This would be a nice way to power a really smart smartcard: Power Paper, Ltd. has created an alkaline-like energy cell that is (among other things) thin, flexible, and "green." Furthermore, it is printable via a silk-screening process onto paper, plastic, and other flexible materials.
ABCNEWS.com has the story."
I wouldn't accept any battery if it wasn't green.
[insert random fortune here]