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I am just dealing with a transaction that requires me to send my credit card number and CVV2 via fax. The fax machine on the other side may stand in a crowded office and even the cleaning staff may be able to reprint the received faxes in the evening. How can the CVV2 verify that someone holds the card physically if its eventually printed out on some random paper sheets in offices all over the world? --[[User:Markus Krötzsch|Markus Krötzsch]] 07:54, 11 August 2005 (UTC)
:I agree. When I call up my telco to pay my bill, and they ask me "and now sir, can I have the last three digits from the back of the card", how do I know they won't use it in conjunction with the credit card number I just provided them to buy lots of stuff? I suppose it might help for things like dumpster-diving receipts etc, where the CVC is not printed... but I think it's less useful than people give it credit for (no pun intended :-) [[User:StephenFalken|StephenFalken]] 00:05, 2 May 2006 (UTC)
== Is it really sure? ==
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