UII

UII is an acronym that can refer to several terms across different domains, and there is no single universally accepted definition. The intended meaning depends on the context in which it is used.

One of the most widely recognized uses is Unique Item Identifier, which appears in asset management, logistics, and government programs to uniquely identify a specific physical item throughout its life cycle. A UII is an alphanumeric code assigned to an item by an issuing authority and can be linked to metadata such as manufacturer, production lot, and serial number. The UII is typically encoded in machine-readable formats like barcodes, RFID tags, or data matrices to enable automated scanning and tracking from manufacture through deployment, maintenance, and disposal. In many industries and jurisdictions, UII schemes are aligned with broader item identification standards to support traceability and accountability.

Other meanings of UII exist and are highly context-dependent, but they are less standardized. Readers encountering the acronym should consult the relevant domain glossary or policy to determine the intended meaning. See also UID (unique identifier) and IUID (item unique identification) as related concepts in asset tagging and tracking.