Microsoft Windows Rights Management Server 2012 can augment an organization's security strategy by protecting information through persistent usage policies which remain with the information no matter where it is moved. You can use AD RMS to help prevent sensitive information -such as financial reports product specifications customer data and confidential e-mail messages -from intentionally or accidentally getting into the wrong hands.
Microsoft Licensing: Device CALs are likely to be more cost-effective than User CALs if there are multiple users per device (for example a call center or an airport kiosk). A minimum of 5 licenses is required in order to purchase through Microsoft Open License Program. This license comes with Microsoft's Maintenance Program Software Assurance