[Reach 360] - Generate learner user token

Hi

I want to use Reach 360 in order to publish and track progress/quiz results of my Storyline 360 generates courses. The courses will be rendered together with other courses in my system and once clicked in the Storyline generated one I would like to open an external web page and show the course for users without having them to be prompted to log in into Reach 360.

Is there a way to generate a user token and authenticate users with it instead of asking email/password?
Or is there any other way to accomplish my use case with Reach 360?