What is the CVV2 number?

To protect our customers against fraudulent charges, we require a 3 or 4-digit
CVV2 be entered when purchasing goods from Bosart Lock & Key, Inc. This
number can be found on the front or back of a credit card depending on the
issuing company. The graphic provided should assist you in locating this
number. If you have difficulties locating your CVV2 please contact your credit
card issuer.