xF1 Add-on Yubikey Two Factor 1.0.1

This add-on adds support for Yubikey OTP in the XenForo 1.5 two-factor system.

Please be aware that you need to get an API key and client ID for the Yubikey cloud API for this. You need a Yubikey to get these API details.

You can also provide your own API implementation URL's.

• 
• 
• 
•