spriv

https://github.com/sprivunix/Ruby-Gem-Adaptive-Two-Factor-Authentication

Spriv is a multi-factor authentication platform includes Adaptive Risk Based Two Factor Authentication that is patent protected. Most users understand that 2FA is a very good thing but won’t tolerate 2FA intervention every time they login - this is Spriv’s sweet spot! For more information, videos or to contact Spriv’s technical team please go to www.spriv.com