The package identifiers provides classes that can be used to create and check identifiers for unique objects or unique classes of objects according to international standards.

Definition from Wikipedia:

"An identifier is a name that identifies (that is, labels the identity of) either a unique object or a unique class of objects, where the "object" or class may be an idea, physical [countable] object (or class thereof), or physical [noncountable] substance (or class thereof). The abbreviation ID often refers to identity, identification (the process of identifying), or an identifier (that is, an instance of identification). An identifier may be a word, number, letter, symbol, or any combination of those."

For more detailed documentation see http://identifiers.readthedocs.io.

See http://www.gs1.org/id-keys.

• Global Trade Item Number (GTIN)

  Used to identify products and services.

  Variants: GTIN12, GTIN13, GTIN14

• Global Location Number (GLN)

  Used to identify parties and locations, for example companies, warehouses, factories and stores.

• Global Shipment Identification Number (GSIN)

  Used to identify shipments, i. e. logistics units delivered to a customer together.

• Serial Shipping Container Code (SSCC)

  Used to identify logistics units, for example loads on pallets, roll cages or parcels.

• International Standard Book Number (ISBN)

  A unique international identifier for monographic publications.

  See http://www.isbn-international.org.

• International Standard Music Number (ISMN)

  A unique international identifier of all notated music publications, whether available for sale, hire or gratis, whether a part, a score, or an element in a multi-media kit.

  See http://www.ismn-international.org.

• International Standard Serial Number (ISSN)

  Used to identify newspapers, journals, magazines and periodicals of all kinds and on all media - print and electronic.

  See http://www.issn.org.

See http://www.swift.com.

• Business Identifier Code (BIC)

  Used to identify financial and non-financial institutions.

• International Bank Account Number (IBAN)

  An internationally agreed system of identifying bank accounts across national borders.

• Market Identifier Code (MIC)

  A unique identification code used to identify securities trading exchanges, regulated and non-regulated trading markets.

  See https://www.iso20022.org/10383/iso-10383-market-identifier-codes

• International Securities Identification Number (ISIN)

  Uniquely identifies a tradable financial asset, a.k.a security.

  See http://www.anna-web.org/standards/isin-iso-6166/.

• European Union VAT Registration Number

  The VAT Registration Number is used to identify natural and legal persons located in the European Union for purposes of VAT handling.

  See http://ec.europa.eu/taxation_customs/business/vat