At checkout step, if the transaction amount is NOT zero, consumers are required to enter credit card/eCheck information to complete the registration, and the payment information is saved for future use.
Note: This force save only happens at the checkout step of the registration process. People are not required to save their credit card when they pay open balances from their online account.
The explanatory text will show up on the checkout page as below (highlighted in green.) The checkbox of Store this card for future use is automatically checked and cannot be unchecked.