I want to store my smarttv aplication's status. Example: I have a multipaged document and I want to store where the user left the program to open this page when the user reopens the program.
What is the efficient way to achieve this?
Given that you are talking about pages and cookies, I'll assume you are using the HTML / JavaScript API.
According to Samsung's list of JavaScript properties, the cookie property is supported. This is defined in the DOM Level 1 specification and Quirks Mode has a guide to using cookies from JavaScript.