Required by the Department of Defense, UID is a new globally unique "part identifier" containing data elements used to track DoD parts through their life cycle. UID Data is encoded into Data Matrix^TM symbols that are applied to parts using Direct Part Marking processes (DPM). The DoD has moved to this transformation technology to facilitate electronic data capture and transmission.

The  DoD  Guide to Uniquely Identifying Items requires the application of Data Matrix symbols to parts in the following categories.

• Costs over $5,000
• Serially managed
• Mission essential
• Controlled inventory
• A consumable item or material where permanent identification is necessary