Very doable. I have FIDO U2F set up on my personal site and wrote a barebones example at https://jonathanstreet.com/blog/flask-second-factor-authentication/ htt

Very doable. I have FIDO U2F set up on my personal site and wrote a barebones example at https://jonathanstreet.com/blog/flask-second-factor-authentication/ https://jonathanstreet.com/blog/flask-second-factor-authenti... I've thought about adding support for remembering devices but using the token is so easy it's just not a priority.