How to filter dynamic data by users in mobile app?

I’m working with a dynamic page in a mobile app, pulling data from a WEB API, as per the tutorial : Using Dynamic Data in Desktop and Mobile Apps

The question is: do I need to filter data by user/company in my application?

I was able to login to the android emulator, now how do I pass the user information to filter the dynamic data on the page that the user needs to consume?