For developers
Free and open source software to rapidly integrate YubiKey strong two-factor, multi-factor and passwordless authentication into your software or service.
YubiKey 5Ci for developers
Yubico SDK for iOS and Android
Do you have or are you currently developing an iOS or Android application and want to integrate strong authentication support for your application? Now you can with the YubiKey 5Ci, an industry-first dual connector security key with support for USB-C and Lightning. Join the Yubico Developer Program and become an early adopter of the YubiKey 5Ci.
Rapid integration of strong 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.
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.
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.
Featured solutions
Read about some of the recent and most popular YubiKey integrations.
Documentation
Access user’s guides, configuration guides, and more for detailed instructions and technical information.