" IUID technology allows DOD to assign a unique number to an item and use that number to manage that item in a variety of logistics processes. In 2003, DOD began implementation of IUID and has estimated that it could improve the accountability and maintenance of its property and equipment and save from $3 billion to $5 billion per year. Also, integrating and sharing UII data across DOD's enterprise information systems could enable DOD to track equipment as it moves between its components. GAO evaluated the extent to which DOD has (1) incorporated key elements of best management practices into its framework for IUID implementation, (2) marked items with IUID labels, and (3) developed the capability to share UII data across DOD in its enterprise information systems. GAO reviewed documents, interviewed cognizant officials, and reviewed DOD and GAO key practices for its analysis. "