This payment module allows you to securely store credit cards on file for your customers using Quickbooks Merchant Services Payment Wallet feature of their API.  Card info is stored in QBMS and not in your store which greatly reduces your security concerns regarding card storage.  The customer or your staff on the backend ordering can check a checkbox to store the card on file.  The next time they checkout they, or the backend user, can use that same card easily by selecting it on the payment page.  The user does not have to enter the card data again.