Authorize.Net's Customer Information Manager (CIM) is a service that allows you to store customer payment information on Authorize.Net's secure servers. This gives you all the convenience of stored credit cards, with all the safety of Authorize.Net.
This module supports all standard payment actions in Magento (including authorize, authorize and capture, partial invoice, refund, partial refund, void, AVS address validation, CVV validation). It also allows customers to save their payment info for future use. This gives your returning customers the convenience of stored credit cards and rapid checkout, while maintaining PCI compliance.
When a customer first checks out, they are given a form to enter credit card details. If they choose to save the card, next time they check out they can reuse that card with a single click. Your users can also view, add, edit, and delete any of their stored payment info through a "Authorize CIM Credit Cards" interface in their account. All frontend features are also available in the Magento Admin Panel.