Removing CV2 number from credit card

Hi,
It's occurred to me that by memorising then removing the CV2 number from the back of my credit card I can thwart unauthorised "card not present" transactions.
Anyone finding my card or copying the details when taking payment in a restaurant wouldn't have the required information to use the card on-line but I can still make the transaction by providing a pin number.
Can anyone see a flaw in my plan? It's not foolproof but would provide some extra protection for free no?
TIA
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It's a good plan...............it's always puzzled me why banks don't send the CV2 number separately as per the pin number.
It would make inroads into card fraud if nothing else.
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wrote:

It's a good plan...............it's always puzzled me why banks don't send the CV2 number separately as per the pin number.
It would make inroads into card fraud if nothing else.
As fraudsters are able to generate genuine credit card numbers - three number CV2 would only require a short time to crack with a computer. I agree it would help you with lost or stolen cards and chancers.
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I don't see why banks can't us onther methods like Nationwide are starting to use. Of course there are many other metonds ie one use card etc.
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At 17:43:16 on 25/12/2007, Eric Jones delighted uk.finance by announcing:

"Genuine" numbers are easy to generate; using them is another matter if the transaction is processed online. Guessing the correct CV2 from close to 1000 possibilities will be more difficult, especially if a switched-on card issuer calls the cardholder after a few attempts to find out what's going on.
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It's a good idea and one that I've used without any problems. Be careful how hard you scratch because it has 'void' printed underneath. I've also found that even when the number is scratched off there is still an indentation and the number can still be made out.
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On 25 Dez., 19:30, snipped-for-privacy@googlemail.com wrote:
That was going to be exactly my suspicion, too.
MM
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Probably because you will have defaced the card rendering it void.
It is also quite likely that when you scratch off the number it will say "void void void" underneath!
So you won't be able to use it in a shop, and won't be able to remember the number you scratched off when phoning for stuff...
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On Tue, 25 Dec 2007 22:25:18 -0000, "R. Mark Clayton"

I often send my girlfriend to pay for fuel using my card while I fill the car up such is the level of checking that goes on! Same with supermarket checkouts. Since Chip and Pin shop assistants hardly look at the card anymore. But just to be sure I'll not scratch the number off but cover it up so it can't be read.
Remembering the three digit number won't be a problem.
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wrote:

I always have my partners card with me but the other day at lakeside in a Jewlers after they took the payment the saw it was not my name on the card and refunded it, bit of a pisser really but most times its ok, Some placed have the card machines for staff use other places its just for the customer. I wiped teh numbers off the cards too and it does not say Void on any of them.
Also a lot of places ask for the CV2 number but some of them have no use for it. I have been to places where they dont have to type it so why do they ask for it. Sometimes I just give them any number just because I know damn well they dont need it
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On Thu, 27 Dec 2007 15:48:34 -0000, "Essex Laptops - Andy Usher"

If ANY place where you are present asks for it, you should report them to the police immediately, and refuse to do business with them.
That number is intended ONLY for verification of cardholder not present transactions.
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Alex Heney, Global Villager
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A quick straw poll in my office suggests this fact should be wider publicised then ... funny, having done a lot of 3D secure work recently I just assumed everyone knew ...
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This is untrue. Merchants are often asked by their card processors to verify CVV2 details when following Code 10 or referral procedures.
Removal may well lead to cards being blocked or retained.
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On Fri, 28 Dec 2007 05:42:20 -0800 (PST), Matthew put finger to keyboard and typed:

What you could do is put a bit of tamper-proof tape over it. That way, if you need to reveal the code for legitimate purposes (such as when required to do so by a Code 10) you can, but no-one else can take a sneak peek at it while handling your card without giving away the fact that they have done so.
Mark
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"Mark Goodge" wrote

Where can you get that tape from?
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use a wax seal with the royal stamp.
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On Fri, 28 Dec 2007 19:37:17 -0000, Tim put finger to keyboard and typed:

A quick Google suggests that http://www.tamper-evident-tape.co.uk/ might have it.
Mark
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"Mark Goodge" wrote

Wow! How big is the CVV2 on your credit card? ;-)
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On Sat, 29 Dec 2007 12:02:18 -0000, Tim put finger to keyboard and typed:

I'm sure you could cut a sufficiently small piece of tape from the roll if you wanted to.
Mark
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Mark Goodge wrote:

Of course, but it would have to be smaller than the line/curve segments from which the letters are made up which are embedded in the tape. The letters are presumably invisible before the tape is tampered with, so when cutting it to size you could not even guarantee to cross a letter/background boundary.
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