From: John Boyle 
Newsgroups: uk.finance
Subject: Re: What if you changed your CC C&P PIN?
Date: Mon, 25 Jun 2007 21:53:18 +0100
Bytes: 1758

In message , Colum Mylod 
 writes
>If I get a new CC and change its PIN, can a replacement card (after
>current card expires) "know" my new PIN?
>
>Correct me if wrong but the issuer and the card's strip/chip "know"
>the PIN a card has (obviously, but they keep it secret - we hope). If
>I change the PIN, the card stores an offset to the issued PIN, no? If
>therefore a replacement card emerges, it can only have the original
>PIN (in whatever form) ,which means I would need to keep a record of
>the original PIN to be able to use the new card.
>
>Do I have this right? If I do, I'm in trouble with a card about to go
>stale...
>
No. The change is communicated by the ATM upon which you changed the PIN 
back to the issuer.
-- 
John Boyle