Bale, This card does all that ours claim to do...this is off the Mastercard PR I referred to earlier...
'Zwipe is now working on the next generation of its card that will be the same format as a standard card and designed to work with all payment terminals for release in 2015. This new card will harvest energy from the payment terminals without the need for a battery.'
So it will even charge itself the way ours was supposed to...
I've posted this BBC story/video before without any comments. It details Zwipe's card actual size and that a legitimate size card was over 12 months away.
I suggest the promo was misleading to what they actually had working at the time.