Unique identifiers

thumb|ISSN for Pilgrims of Saint Michael|Vers Domain, encoded in an EAN-13 barcode with sequence variant 0 and issue number 05 thumb|Example of an ISSN, 2049-3630, encoded in an International Article Number (EAN)|EAN-13 bar code, with explanation thumb|ISSN expanded with sequence variant 0 to a Global Trade Item Number|GTIN-13 and encoded in an [[EAN-13 barcode with an EAN-2 add-on designating issue number 13]]

German National Library authority file for personal names, subject headings and corporate bodies

authority file with 16-digit identifier for people and organisations

chemical identifier

unique identifier assigned to network interfaces for communications on the physical network segment

cellphone identification code

two-letter country codes defined in ISO 3166-1

Wikimedia list article

standard describing a barcode symbology and numbering

ISO standard defining Business Identifier Codes assigned by SWIFT

a number that uniquely identifies every user of a cellular network

ResearcherID is an identifying system for scientific authors. The system was introduced in January 2008 by Thomson Reuters Corporation.

A permalink or permanent link is a URL that is intended to remain unchanged for many years into the future, yielding a hyperlink that is less susceptible to link rot. Permalinks are often rendered simply, that is, as clean URLs, to be easier to type and remember. Most modern blogging and content-syndication software systems support such links. Sometimes URL shortening is used to create them.

128-bit number used to identify information in computer systems

barcode symbology used for tracking trade items in stores

identifier which is unique and permanent within all of space and time

nine-digit number issued to U.S. citizens, permanent residents, and temporary working residents

a standard identifier code based on an international standard for uniquely identifying sound recordings and music video recordings

identifier for printed music developed by ISO

CODEN – according to ASTM standard E250 – is a six-character, alphanumeric bibliographic code that provides concise, unique and unambiguous identification of the titles of periodicals and non-serial publications from all subject areas.

unique identifier for audiovisual works and related versions, similar to ISBN for books

abbreviated language code listing and format maintained by the Internet Engineering Task Force (IETF) mirroring ISO 639-3

20-digit, alpha-numeric reference string to uniquely identify a legally distinct entity

ISO standard

identifier for trade items

ID number used for user accounts and groups in Microsoft Windows

unique permanent global company identifier developed by Dun & Bradstreet

unique identifier for musical works

part of the GS1 systems of standards

identifier number for logistics

identifier which is unique and permanent within a subset of space and time

European Union registration and identification number for businesses

EasyNumber (acronym reading "Enterprise Access SYstem Number") is a Business information identifier provided by the Easynumber Company, a joint venture between the Companies Creditreform and Coface. It is sequentially allocated to any type of private or public organization, operating business or services providers, domestically or internationally, regardless the country of origin or the operating industry.

identifier for a taxpaying entity in the United States

unique identifier format used by various platforms

Italian taxpayer identification number

unique identifier for text-based works

80px|right|Pharmacode sample Pharmacode, also known as Pharmaceutical Binary Code, is a barcode standard, used in the pharmaceutical industry as a packing control system. It is designed to be readable despite printing errors. It can be printed in multiple colors as a check to ensure that the remainder of the packaging (which the pharmaceutical company must print to protect itself from legal liability) is correctly printed. This barcode is also known as Laetuscode.

Mobile subscription identification number

A 5-character code used within NATO Countries identifying a company location or government agency location for contracting and the award of financial grants. Officially known as NCAGE.

person identifier in Russia