If the DebitWare Card being used for payment is configured to require a verification code (PIN), the user is prompted via a popup dialog to enter the PIN at checkout. If the PIN entered is incorrect, the user is notified to reenter the verification code. If the PIN is entered incorrectly a certain number of times, the user is redirected to a specified page. The number of tries a user is allowed to enter the PIN and the page that they are redirected to are configurable with settings added to the Site Admin Panel (DWPinAttempts and DWPinRedirectPage respectively). In addition, the prompt that appears in the popup window for entering the PIN and the message to display to the user before they get redirected after failed attempts to enter the PIN are both configurable with new settings in the Site Admin Panel (DWPinPrompt and DWPinRedirectMessage respectively). And finally, a setting, UseDwPin, is used to control whether or not to prompt for a verification code when a card requires a PIN at checkout. This must be set to 1 if any of the DebitWare cards you use require a PIN for purchases. Setting UseDwPin to 0 skips the prompt for a PIN altogether when using DebitWare cards. Cards that require a PIN for purchases then fail to be approved at checkout.