Big Business includes the option to store Credit Cards, using strong encryption. This Solution describes Secure Credit Cards and its data entry features. (6131)
This Solution describes the Secure Credit Cards option to Show List, which lets you select from a list of a Customer's credit cards, without displaying sensitive data. Show List includes Cardholder, Last Four, Expiry, Description, and Last Used. (6170)
Cannot Edit Credit Cards restricts an Employee's Access so they cannot view or change Secure Credit Card entries.
Secure Credit Cards uses a checksum (Luhn algorithm) to confirm that a valid card number is entered. If the checksum fails, because a digit is incorrect, missing, transposed, etc. an error reports, "Invalid Card Number". This Solution describes this feature. (6197)
Wikipedia: Luhn agorithm
The option to Delete a Secure Credit Card entry appears on the Edit window.