If you mean the 3 digit security code on the back of the card, the ONLY way to check is to read the card. Even if you walk into the issuing bank and show ID, they WON’T tell you the number. They may give you a replacement card, but they WON’T give you the number.

You mean the number on the back of your debit card? No… the only place to really find it is on the card. If this is not answering your question…sorry…but it doesn’t really make much sense.