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A 2KB, zero-dependency library that answers one specific question: should you show a "Sign in with Face ID / Touch ID / Windows Hello" button? It wraps the native WebAuthn check with a safety timeout, secure-context detection, and caching — nothing else. No passwords, no tokens, no backend logic.
Hey Product Hunt 👋
I kept running into the same pattern across projects: any team implementing WebAuthn already has their backend sorted (credential registration, signature verification), but the "should I even show the biometric button?" UI check gets copy-pasted ad-hoc every time — usually without a timeout, without checking for secure context, and without caching.
So I packaged that specific check into a standalone, zero-dependency library:
```js
import { shouldShowBiometricLoginButton } from "is-web-biometrics-supported";
if (await shouldShowBiometricLoginButton()) {
renderBiometricButton();
}
```
It's ~2KB, has zero runtime dependencies, ships ESM/CJS/UMD builds, works safely in SSR (Next.js/Nuxt), and has a full test suite (15 tests, CI on Node 20/22/24).
It doesn't touch passwords, tokens, or the actual WebAuthn registration flow — that's still your backend's job. This only answers the interface question.
Happy to answer anything about the implementation or take suggestions — it's brand new (v1.0.1), so edge cases are very welcome.
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About is-web-biometrics-supported on Product Hunt
“The one-question WebAuthn UI helper”
is-web-biometrics-supported was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #153 on the daily leaderboard. A 2KB, zero-dependency library that answers one specific question: should you show a "Sign in with Face ID / Touch ID / Windows Hello" button? It wraps the native WebAuthn check with a safety timeout, secure-context detection, and caching — nothing else. No passwords, no tokens, no backend logic.
is-web-biometrics-supported was featured in Open Source (68.7k followers), Developer Tools (517.5k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 120.5k products, making this a competitive space to launch in.
Who hunted is-web-biometrics-supported?
is-web-biometrics-supported was hunted by Luis Cordoba. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Luis Cordoba