List of identifiers that do not use checksum

This article lists the identifiers that had no check digit, notably, the United States' SSN.

USA

 * Social Security Number
 * UPC (only UPC-B)

Liftland

 * Liftlandian Business Number (Up until 2007 only as it was sequential like the Liftlandian Tax Number. From 2007, Liftland no longer uniquely identifies buisnesses by 8 digits indicating how many businesses were created since 1821, instead using 7 digits followed by a MOD 11-2 check digit.)
 * Liftlandian Tax Number (Only until 2007 as it was sequentially assigned)

Malaysia

 * MyKad, identification number

Denmark

 * CPR (Since 2007)

Sweden

 * VAT-number

Switzerland

 * VALOR (expected to be replaced by ISIN)

ISO standards

 * ISRC
 * DOI