Yubico Authenticator

Yubico Authenticator

2FA with YubiKey

287 ratings
320 reviews
Free

Details

Released
November 5, 2019
Updated
March 11, 2026
Yubico Authenticator screenshot #1 for iPhone
Yubico Authenticator screenshot #2 for iPhone
Yubico Authenticator screenshot #3 for iPhone
Yubico Authenticator screenshot #4 for iPhone
iphone
ipad
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About

Secure your online accounts with hardware-backed two-factor authentication. Store unique credentials on a physical security key, eliminating the need to store sensitive data on your mobile device. Generate verification codes without an internet connection for enhanced account protection.

✓Hardware-backed security key storage
✓Touch or NFC authentication
✓USB-C support
✓Biometric unlock (FaceID/TouchID)
✓QR code setup
✓User presence verification
✓Smart Card support
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What users say about Yubico Authenticator

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What's New in Yubico Authenticator

1.13.0

March 11, 2026

This version adds support for retired PIV slots and PIV decryption in the Smart card extension, enabling mail clients to decrypt encrypted emails using private keys stored on YubiKey. We've also added SCP11 support for PIV sessions over NFC on FIPS keys and improved PIV certificate display names. Additionally, we've improved how the app handles YubiKeys with the OATH application disabled and improved the reliability of the Yubico OTP disable feature.

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User reviews

No More OTPs

Can't get my 6 digit OTPs up on iPhone only android which makes this key useless now.

FIDO2パスキー管理がiOSではできないことを明記してほしい

Security Key C NFCを購入し、iPhone版Yubico Authenticatorをインストールしました。

App Storeの説明ではNFCによるYubiKeyの利用や「Hardware Security」が紹介されているため、iPhoneでもNFCを使ってYubiKey内のFIDO2パスキーを確認・管理できるものと思っていました。

しかし、実際にはiOS版ではFIDO2パスキーの一覧表示・管理には対応しておらず、同じYubico AuthenticatorでもDesktop版やAndroid版でのみ利用できる機能でした。

最初にNFCでSecurity Key C NFCを読み取った際には「このYubiKeyには、要求された機能がないか、無効になっています」と表示されたため、製品の故障や誤配送まで疑ってしまいました。

Mac版Yubico Authenticatorでは正常に認識され、FIDO2パスキーの一覧や使用数(8/100)も確認できました。また、Yubico公式のGenuine Verificationでも正規品・Firmware 5.8.0として正常に確認できています。

iPhoneでYubiKeyをNFC認証に使用できること自体には満足しています。

ただし、iOS版ではFIDO2パスキーの一覧表示・管理ができないことを、App Storeの説明でもう少し明確にしてほしいです。現在の説明やスクリーンショットでは、iPhone版でもDesktop版やAndroid版と同様のパスキー管理ができると誤解しやすいと思います。
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The OATH application is disable or not supported on this Yubikey

I received notification above when i put Yubikey 5c Bio on my Iphone

不能借yubike 差評

🚳

NFC YubiKey Authenticator Issue

I’m having issues with NFC YubiKeys. I can’t set them up as an authenticator. Can you please help me with this??

User experience

🐞

Reported Bugs

4 issues

NFC not working reliably

Bug

Accounts disappearing after updates

Bug

Calculation of codes not working

Bug

Keyboard issues when using keys

Bug
✨

Requested Features

5 requests

Allow editing and rearranging of entries

Feature

Add support for multiple keys per account

Feature

Improve iPad/tablet support

Feature

Add dark mode option

Feature

Improve QR code scanning

Feature

FAQ

What does the Yubico Authenticator app do?

The Yubico Authenticator app allows you to store your unique credentials on a hardware security key, such as a YubiKey. It then generates verification codes used to log into various online services, providing a secure two-factor authentication method without storing sensitive information on your mobile device.

What are the key features of the Yubico Authenticator?

Key features include storing credentials on a hardware security key, touch or NFC authentication, USB-C support, biometric unlock using FaceID or TouchID, easy setup via QR codes, user presence verification, and support for both time-based and counter-based code generation. It also offers Smart Card support for certificate-based authentication.

How much does the Yubico Authenticator app cost?

The Yubico Authenticator app is free to download and use. There are no in-app purchases or advertisements associated with the application itself. The primary cost is the purchase of a compatible YubiKey hardware security key.

What devices is the Yubico Authenticator compatible with?

The app is compatible with mobile phones and tablets that support USB, Lightning, or NFC connections, depending on the YubiKey model used. iPads without NFC will require a Lightning or USB connection. It generates codes that are compatible with services that support other authenticator apps.

How does this app improve security compared to other authenticator apps?

This app enhances security by storing your sensitive secrets on a hardware-backed YubiKey, rather than on your mobile device's internal storage. This significantly reduces the risk of account takeovers if your phone is compromised. Codes are generated only when the YubiKey is physically present and authenticated.