---
title: "Discussion on \"How Aadhaar Deduplicates Biometrics at Billion Scale\" | Hashnode"
description: "Discussion on \"How Aadhaar Deduplicates Biometrics at Billion Scale\". The hardest part of Aadhaar is not storing rows: it is de-duplication: ensuring a person does not receive two identities when the archive already holds over a billion enrollees. Each new application m"
url: "https://hashnode.com/posts/how-aadhaar-deduplicates-biometrics-at-billion-scale/69ed5c9ae96902aae10ca861"
---

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# [How Aadhaar Deduplicates Biometrics at Billion Scale](https://helloashish.hashnode.dev/how-aadhaar-deduplicates-biometrics-at-billion-scale?utm_source=hashnode&utm_medium=feed)

The hardest part of Aadhaar is not storing rows: it is de-duplication: ensuring a person does not receive two identities when the archive already holds over a billion enrollees. Each new application m

Apr 26 · 4 min read · helloashish.hashnode.dev  
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-   [#aadhaar](https://hashnode.com/tag/aadhaar)
-   [#identity](https://hashnode.com/tag/identity)
-   [#scale](https://hashnode.com/tag/scale)
-   [#engineering](https://hashnode.com/tag/engineering)
-   [#infrastructure](https://hashnode.com/tag/infrastructure)

## Written by

[Ashish Kumar](https://hashnode.com/@helloashish)

@helloashish · Delhi, India

  
[View profile](https://hashnode.com/@helloashish)

Senior frontend engineer writing about React internals, browser performance, and how big tech builds things. renderlog.in

Senior frontend engineer writing about React internals, browser performance, and how big tech builds things. renderlog.in

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