International Standard Name Identifier
This article relies too much on
|Introduced||March 15, 2012|
|No. of digits||16|
|Example||0000 0001 2150 090X|
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.
It was developed under the auspices of the
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.
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.