Module Options:Payment Viewer
Payment Viewer Module Options Template:Top
Some aspects of the 
Payment Viewer module can be customized by opening the module, clicking the Tools menu, and then selecting Module Options.
- Credit Card Requirements that can be required before a credit card payment can be processed:
- Credit card number must be valid
- Security code (CV2 #)
- Name on card
- Billing address
- Billing postal code
- Billing country code
- Hide credit card number
- When this option is on, all but the last four digits of a credit card number will be hidden for all users.