http://ohgizmo.disqus.com/enWed, 09 Aug 2006 13:40:27 -0000http://www.ohgizmo.com/2006/08/09/sipix-smart-cards/#comment-1758701<p>Interesting idea, but I'm curious about how unique the number is. I'm assuming that the number isn't transmitted from the card to the bank, so how does the bank match up the number on the card with the one you type into a website? It seems to me that it would be some sort of algorithm based upon the credit card number and the date. Once the algorithm is figured out it will be useless because all the cards sent out have already been hard coded. They must have thought up something creative to thwart this but I'm at a loss to see what it is.</p>Thomas PaineWed, 09 Aug 2006 13:40:27 -0000