Authnkey

10 Downloads 31 Views v1.2 2.45 MB 4.1+

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(2.45 MB)

Editor's Overview

Authnkey is a password & 2fa application developed by Michel Le Bihan, packaged as a single Android APK of version 1.2 weighing in at 2.45 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 2.45 MB, so it installs quickly even on modest connections.
This build is signed by "Michel Le Bihan" — always verify the developer name matches what's listed on the app's official store page before installing an update.
After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

About this app

Authnkey is a credential provider that lets you use FIDO2 security keys (like YubiKey, SoloKey, Nitrokey, or Token2) for passkey authentication on Android.

Many security keys don't fully work on Android: no PIN entry, no passkeys, just basic tap-to-authenticate.

Authnkey fixes that.

Install it, enable it in your phone's settings, and your FIDO2 security key or smartcard gains full passkey support over NFC and USB, including PIN and fingerprint verification and stored passkeys.

You can also manage your key right from the app: view and delete stored passkeys, and set or change its PIN.

Requires Android 14+ and a FIDO2-compatible security key or smartcard.

Details

Version	v1.2
Size	2.45 MB
Developer	Michel Le Bihan
Category	Password & 2FA
Package	pl.lebihan.authnkey
Android	4.1+
Last Updated	Oct 28, 2026
Downloads	10

Frequently Asked Questions

Is Authnkey free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does Authnkey require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Authnkey safe to install?
We link to the exact APK published by Michel Le Bihan. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update Authnkey?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install Authnkey

Tap the Download APK button above and save the file to your device.
Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
Open the downloaded pl.lebihan.authnkey.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «Authnkey» by Michel Le Bihan and grant only the permissions it actually needs.
Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.