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Thin, Flexible Printable Battery For Smartcards

Posted by chrisd on from the don't-hate-me-because-I'm-well-engineered dept.

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."

2 of 83 comments (clear)

  1. Re:Battery life by Karma+50 · · Score: 4, Interesting

    If my maths is right - 25 hours at standard drain

    http://www.powerpaper.com/tech/technology.html

    Nominal current 0.1 mA/cm2
    Capacity 2.5 mAh/cm2

    Shelf life is 2.5 years.

    So between 1 day and 2.5 years depending on usage.

    --
    http://www.thehungersite.com
  2. Power Supply Cryptanalysis by burris · · Score: 4, Interesting
    Unfortunately, information about what the smart card is doing is leaked through the power supply. Giving the smartcard it's own internal power supply can help prevent power analysis attacks from the reader itself. By eliminating an input/output, the black box of the smart card can be made that much "blacker."


    burris