---
title: "Discussion on \"Implementing Two-Factor Authentication (TOTP) in NestJS: With Full Source Code\" | Hashnode"
description: "Discussion on \"Implementing Two-Factor Authentication (TOTP) in NestJS: With Full Source Code\". Build a real TOTP-based 2FA flow with NestJS, Passport, and PostgreSQL — secret generation, QR codes, backup codes, and the guard logic to tie it all together."
url: "https://hashnode.com/posts/implementing-two-factor-authentication-totp-in-nestjs-with-full-source-code/6aba0eda22416363a6664495"
---

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# [Implementing Two-Factor Authentication (TOTP) in NestJS: With Full Source Code](https://blog.zyvop.com/implementing-two-factor-authentication-totp-in-nestjs-with-full-source-code?utm_source=hashnode&utm_medium=feed)

Build a real TOTP-based 2FA flow with NestJS, Passport, and PostgreSQL — secret generation, QR codes, backup codes, and the guard logic to tie it all together.

Sep 28 · 13 min read · blog.zyvop.com  
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-   [#2fa](https://hashnode.com/tag/2fa)
-   [#authenticationsecurity](https://hashnode.com/tag/authenticationsecurity)
-   [#backupcodes](https://hashnode.com/tag/backupcodes)
-   [#jwtauthentication](https://hashnode.com/tag/jwtauthentication)
-   [#nestjs](https://hashnode.com/tag/nestjs)

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[ZyVOP](https://hashnode.com/@zyvop)

@zyvop · Delhi, India

  
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