Can a form processor validate a credit card?
Yes. A form processor can validate a credit card supplied in an HTML form. It is not a common task with the ones that are available on the Internet. The form processors that validate credit card numbers only perform a test to determine if the number is valid or not. For example, VISA cards starts with the number 4, Master Card with the number 5, etc. The numbers are generated with an error-checking feature. More dynamic form processors can connect to a service such as a bank or payment gateway, which can validate the credit card and verify that the number is valid with available funds. It’s good practice to use a secure web connection when requesting a credit card number. The HTML form should be hosted in a web server using a secure connection such as the https protocol.
