Big Data is a new concept that has become widely popularised in recent years. The revolutionized meaning of information communication technologies and Internet technologies refers to mobile communications which enable individuals to move and generate, transmit and receive different kinds of information. There are many communication options where users can search, interact and share information with other users such as website, social media, online communities blogs, and email called as Digital transformation. In Digital transformation era, over 95 % of travellers today use digital resources. Digital traveler can be as data source for official statistics. One of methods to capture the number of tourist can use Mobile Positioning Data (MPD). This method is considered able to improve the quality of survey data. This article will discuss further how to improve the quality of survey data through Big Data with case studies of MPD users in Indonesian Tourism Statistics.