Authentication in PredictionIO Recommendation Engine Template

[Walter Kandulna]

Hi,
I have built a Recommendation System from Recommendation Engine Template. I
have a link, using that link I can perform an event, get the
recommendation. If I give it to others they can also see the recommendation.

So, I want only authorised users after authentication should be able to get
recommendations and perform any event.
Please guide me.

Thanks and Regards