Can I use Asp.Net Identity in WCF?

Hi All,

I am new to Asp.Net Identity; in most of my application we are using web service for the database activity.  I go through many online Asp Net Identity article but everywhere they are creating identity from presentation/UI layer.  

I want to know that whether we can use Asp.Net Identity implementation in WCF layer(like adding new user to db, user authentication etc).  Is it a good idea to implement it in WCF?  If so how will/best way to send the token information back to UI.  

Thanks

Selvakumar R