Eventbrite Api

Hi all,

The site I'm currently building requires all registered members to also attend a conference.

So I was thinking of using eventbrite. But more than that I was hoping that I could use eventbrites api to authenticate users, so they would only have to register with eventbrite and not with the drupal site. I would then use a logi n with eventbrite for daily use (similar to login with facebook , twitter etc).

Has anyone any experience with bypassing the drupal authentication, does this sound feasable?

thanks
Rob