Editing Luhn algorithm (section)

== Uses ==
The Luhn algorithm is used in a variety of systems, including:
* [[Payment card number|Credit card numbers]]
* [[International Mobile Equipment Identity|IMEI numbers]]
* [[CUSIP]] numbers for North American financial instruments
* [[National Provider Identifier|National Provider Identifier numbers]] in the United States
* [[Canada|Canadian]] [[social insurance number]]s
* [[Israeli identity card|Israeli]] ID numbers
* [[South Africa|South African]] ID numbers
* [[South Africa|South African]] Tax reference numbers
* [[Sweden|Swedish]] [[national identification number]]s
* [[Sweden|Swedish]] Corporate Identity Numbers (OrgNr)
* [[Greece|Greek]] Social Security Numbers (ΑΜΚΑ)
* [[SIM_card#ICCID|ICCID]] of SIM cards
* [[European Patent Convention|European patent]] application numbers
* Survey codes appearing on [[:File:McDonalds Receipt Luhn Algorithm.png|McDonald's]], [[:File:Taco Bell Receipt Luhn Algorithm.png|Taco Bell]], and [[:File:Tractor Supply Receipt Luhn Algorithm.png|Tractor Supply Co.]] receipts
* [[United States Postal Service]] package tracking numbers use a modified Luhn algorithm<ref>{{Cite book |url=https://postalpro.usps.com/mnt/glusterfs/2023-10/Pub%20199_v28_10102023.pdf |title=Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systems |date={{date|2023-10-10|DMY}} |publisher=[[United States Postal Service]] |edition=28th |location=[[United States]] |language=en |access-date={{date|2023-11-29|DMY}} |archive-url=https://web.archive.org/web/20231117004502id_/https://postalpro.usps.com/mnt/glusterfs/2023-10/Pub%20199_v28_10102023.pdf |archive-date={{date|2023-11-17|DMY}} |url-status=live}}</ref>
* Italian VAT numbers ([[VAT identification number#European Union VAT identification numbers|Partita Iva]])<ref>{{Cite web |last=Albanese |first=Ilenia |date={{date|2022-08-10|DMY}} |title=A cosa serve la Partita Iva? Ecco cosa sapere |trans-title=What is a VAT number for? Here's what to know |url=https://www.partitaiva.it/partita-iva-cosa-serve/ |url-status=live |archive-url=https://web.archive.org/web/20240629162018/https://www.partitaiva.it/partita-iva-cosa-serve/ |archive-date={{date|2024-06-29|DMY}} |access-date={{date|2024-06-29|DMY}} |website=Partitaiva.it |language=it}}</ref>