Return Path Data (RPD) service is used to generate passive data. In India, it has been used by Tata Sky. There are no meters installed and people watch TV as they normally would. It allows a large sample size, and drills down into data and map that data to the subscriber base. They are able to look at viewing data by subscription packages, core subscribers etc. It s useful in subscriber management and marketing. It helps carriage negotiations, content acquisition, selling of ads, revenue generation from platforms.