--- title: Someone made an ESP32 passwordless fingerprint unlocker,... description: A GitHub user built a DIY passwordless fingerprint unlocker using an ESP32S3 Seeed XIAO. The device works by requesting an encrypted password from the host PC... canonical: https://daily.dev/posts/someone-made-an-esp32-passwordless-fingerprint-unlocker-and-you-can-make-one-at-home-orpgzzddt twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Someone made an ESP32 passwordless fingerprint unlocker, and you can make one at home | daily.dev og:description: A GitHub user built a DIY passwordless fingerprint unlocker using an ESP32S3 Seeed XIAO. The device works by requesting an encrypted password from the host PC... og:url: https://daily.dev/posts/someone-made-an-esp32-passwordless-fingerprint-unlocker-and-you-can-make-one-at-home-orpgzzddt og:image: https://api.daily.dev/og/posts/OrpGZzddt.png og:image:alt: Someone made an ESP32 passwordless fingerprint unlocker, and you can make one at home og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Someone made an ESP32 passwordless fingerprint unlocker, and you can make one at home **[XDA Developers](https://daily.dev/sources/xda-developers)** · 2 min read · 0 upvotes · 0 comments ## Summary A GitHub user built a DIY passwordless fingerprint unlocker using an ESP32S3 Seeed XIAO. The device works by requesting an encrypted password from the host PC via HID/Serial, typing it via HID, then zeroing out memory so the decrypted password exists for only milliseconds. The project is open source on GitHub. While not highly secure against a determined attacker with physical access to both the device and PC, it's a practical and clever home project for PC unlock and passkey use. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Building A Wireless Fingerprint Authorization Device](https://daily.dev/posts/building-a-wireless-fingerprint-authorization-device-qpoprt55a) · Hackaday · 3 upvotes · 0 comments - [Introducing Dashboard Touch, a build-your-own version of Touch ID](https://daily.dev/posts/introducing-dashboard-touch-a-build-your-own-version-of-touch-id-dmxdvndvs) · Anil Dash · 0 upvotes · 0 comments - [An ESP32-S3 can pretend to be a "normal" USB device, and it's one of the most useful tricks it can pull](https://daily.dev/posts/an-esp32-s3-can-pretend-to-be-a-normal-usb-device-and-it-s-one-of-the-most-useful-tricks-it-can-p-usz4svjxh) · XDA Developers · 0 upvotes · 0 comments - [A Keyboard For Anything, Without A Keyboard](https://daily.dev/posts/a-keyboard-for-anything-without-a-keyboard-2pzydjh45) · Hackaday · 0 upvotes · 0 comments - [This Tiny Fingerprint Key Unlocks Linux, Approves SSH and AI Agents](https://daily.dev/posts/this-tiny-fingerprint-key-unlocks-linux-approves-ssh-and-ai-agents-f9zeesla7) · It's Foss · 1 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#iot](https://daily.dev/tags/iot), [#embedded](https://daily.dev/tags/embedded) [View this post on daily.dev](https://daily.dev/posts/someone-made-an-esp32-passwordless-fingerprint-unlocker-and-you-can-make-one-at-home-orpgzzddt) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Someone made an ESP32 passwordless fingerprint unlocker, and you can make one at home","url":"https://daily.dev/posts/someone-made-an-esp32-passwordless-fingerprint-unlocker-and-you-can-make-one-at-home-orpgzzddt","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/someone-made-an-esp32-passwordless-fingerprint-unlocker-and-you-can-make-one-at-home-orpgzzddt"},"datePublished":"2026-07-07T05:39:05.911Z","dateModified":"2026-07-07T05:39:25.315Z","description":"A GitHub user built a DIY passwordless fingerprint unlocker using an ESP32S3 Seeed XIAO. 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