unique identifier
One-of-a-kind label
A unique identifier is a string of characters or numbers that distinguishes one item from all others in a system.
Social Security numbers identify individuals, ISBNs identify books, URLs identify web pages.
In databases and programming, unique identifiers ensure records can be retrieved without ambiguity: Each user account has a unique identifier.
Often abbreviated UID.
- barcodeEncoded product stripes
- fingerprintFriction ridge impression
- serial numberUnique alphanumeric product identifier
- license plateVehicle identification marker
- VIN numberVehicle identification number number
tracking number · authentication · part number · lot number · name · catalog number · social security number · identity verification · UUID · DOI · IP address · maker's mark · SKU · ID · employee badge · student ID · library card · provenance
unique identifierduplicate key
Copied lock opener
common name · placeholder · wildcard · unknown · unspecified
unique identifierpseudonym
Fictitious professional name
unidentified · nameless · untraceable · blank slate · unknown
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