From: Cynic 
Newsgroups: uk.finance uk.legal
Subject: Re: Credit Cards/Chip and Pin/ATM withdrawls
Date: Wed, 14 Dec 2005 22:32:23 +0000

On Wed, 14 Dec 2005 14:06:43 +0000, Alex Heney 
wrote:

>If you don't think a 1 in 3333 chance is insignificant, then how low
>do you thank the risk has to be before it does become insignificant?

>If you are careless and unlucky enough to get a card stolen once a
>week by a thief who attempts to guess the number, then this means that
>on average, the number will be guessed roughly once in every 60 years.

Quite.  And it will have to be *very* low before it matches the
probability that a thief will be able to copy your signature well
enough to satisfy the checkout clerk.

-- 
Cynic