Embedding Instagram User feed in a certain site

I stumbled upon this area where http://ift.tt/19XklQ1 where what I wanted was users/self/feed endpoint where I could get the currently authenticated users feed. Now my problem with that is it needs client side authentication like those pop up window login. What I want to do is like Facebook Activity Feed plugin where it fetches data from a certain page without client side authentication or without the users consent to authenticate.

Is there a way of authentication in instagram api that do all the work by code? since the feed I want to put in the site is my clients own instagram account.

Thanks for the help in advance.