International Standard Name Identifier
This article relies too much on
|Introduced||March 15, 2012|
|No. of digits||16|
The International Standard Name Identifier (ISNI) is an identifier for uniquely identifying the public identities of contributors to media content such as books, television programmes, and newspaper articles. Such an identifier consists of 16 digits. It can optionally be displayed as divided into four blocks.
ISNI can be used to disambiguate names that might otherwise be confused, and links the data about names that are collected and used in all sectors of the media industries.
It was developed under the auspices of the
2013-09-01 "INTERNATIONAL STANDARD ISO 27729:2012 TECHNICAL CORRIGENDUM 1" was published.
The FAQ of the isni.org websites states "An ISNI is made up of 16 digits, the last character being a check character." 
In display it is frequently shown with spaces.