For developers

We offer free and open source software for integrating YubiKey strong two factor authentication into your software or service.

Rapid integration of two factor authentication

Open Source Code

Integrate the YubiKey with your service, it’s quick and easy. The YubiKey works seamlessly with Windows, MacOS, Linux, iOS, and Android devices. No extra software for your users to download or license.

Developer Tools

Use our reference documentation and testing tools to rapidly enable one touch authentication for your users. The YubiKey supports FIDO, PIV-compatible Smart Card, One-time Passwords (OTP), and OpenPGP.

Own Your Secrets

Control your own cryptographic secrets. No passwords, keys, PINs or other secrets are
shared with Yubico.

New Developer Program

The Yubico Developer Program provides resources for organizations implementing strong authentication. We offer free workshops, documentation, implementation guides, APIs and SDKs. Join our mailing list to get early access to resources for implementing the FIDO2, WebAuthn specification.

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Works with YubiKey Program

Join the Works with YubiKey Program to have your products and services featured on the Works with YubiKey catalog. Participate in co-marketing activities that showcase your solution and promote the value of strong authentication.

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Developer Videos

Introduction: FIDO2 Authentication – Watch now

Core Concepts: WebAuthn Data Flows, Attestation, and Passwordless Watch now

Technical Overview: WebAuthn Server ValidationWatch now

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Featured Solutions

Read about some of the recent and most popular YubiKey integrations.

Blog post

YubiKey comes to the iPhone with Mobile SDK for iOS

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Blog post

Yubico and Microsoft Introduce Passwordless Login

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Ecosystem showcase

LastPass leverages YubiKit Mobile SDK for iOS

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KNOWLEDGE BASE

Get answers to commonly asked questions

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DOWNLOADS

Access our free and open source software tools.

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DOCUMENTATION

Access user’s guides, configuration guides, and more for detailed instructions and technical information.

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