---
title: "Discussion on \"THE CHECK DIGIT: HOW A NATIONAL ID CATCHES ITS OWN TYPOS\" | Hashnode"
description: "Discussion on \"THE CHECK DIGIT: HOW A NATIONAL ID CATCHES ITS OWN TYPOS\". By the end of this post you will know how the last digit of a national ID number catches a typo"
url: "https://hashnode.com/posts/the-check-digit-how-a-national-id-catches-its-own-typos/6ad67b7a8a9817a036b2ee23"
---

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# [THE CHECK DIGIT: HOW A NATIONAL ID CATCHES ITS OWN TYPOS](https://immanuelsoetan.hashnode.dev/the-check-digit-how-a-national-id-catches-its-own-typos?utm_source=hashnode&utm_medium=feed)

By the end of this post you will know how the last digit of a national ID number catches a typo

Oct 19 · 8 min read · immanuelsoetan.hashnode.dev  
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## Written by

[Emmanuel Soetan](https://hashnode.com/@supa)

@supa · Nigeria

  
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Building Identity Infra powering the economy

Software Engineer (React/TypeScript/NestJs/Golang) | Building Identity Infra powering the economy | 10M + Verifications | GovTech & DPI | Brave Worrier.

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