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Producer: Animate Your Science (Copyright: CC-BY-NC)

Do you know where the personal data you leave behind in apps and on social media is used?

A new method for analyzing data developed by Professor Jill Walker Rettberg helps identify precisely that.

To a large extent, social media and big data are shaping our lives and the world around us. They affect how we present ourselves in various channels and influence our consumption patterns. The companies behind these platforms have great power, much of which is based on our own data.

"We leave behind enormous amounts of personal data in various platforms. But do we know where the data ends up? How it is processed, the context in which it is used, or for which purpose? Only to a small extent," according to Jill Walker Rettberg.

Rettberg is professor of Professor of Digital Culture at the University of Bergen.

In recently published article, she proposes a method called «situated data analysis», a new way of analyzing how personal data on social media platforms and digital apps changes its meaning when used in different contexts.

Rettberg used the Strava fitness app as a case study to explore and illustrate the method.

Strava is used to record your running or cycling activities and the results are visualised using diagrams or graphs. You can also view other people’s results, allowing you to compete against others who exercise in the same area as you. The app collects vast volumes of data from thousands of users and maps are used to tell us where it is popular to run and cycle in various parts of the world.

Professor Jill Walker Rettberg has developed a new method to analyse social media platforms and digital apps. She analyses the power relations between companies, platforms and users.

From personal to public data

"It is appealing to look at such maps and it is easy to find enjoyment in your own data. But your individual data is used in a new context, your personal data is becoming public data," says Rettberg, referencing the Norwegian soldiers who revealed the location of military bases in Afghanistan and Iraq through Strava.

"It is a huge leap from showing your friends that you’re running five miles a day to revealing the location of the military camp where you work".

Strava also offers its big data to the commercial market. Through the Strava Metro service, it sells its datasets to city planners, special interest groups and companies wishing to take a closer look at peoples’ movements in a specific area.

Rettberg used the Strava fitness app as a case study to explore and illustrate her proposed method called «situated data analysis». The professor’s analysis shows that the app uses the data it collects in four different ways, or layers.

Four different uses of your data

Rettberg’s analysis shows that Strava uses the data it collects in four different ways, or layers.

"Firstly, we users can see our own data and share it with friends. Secondly, we can see the global data through data visualisations. The third way of using the data can be linked to a specific city, where stakeholders such as city planners can buy access to study patterns in peoples’ movements. And fourth, the data is processed using algorithms and can, for example, be used by a navigation app to recommend the best route through the city”, the professor explains.

In these last two layers, the data is operationalised, which means it does something more than simply providing a visual portrayal. The data is processed by computers that subsequently generate new information.

Hoping for increased awareness

"«Situated data analysis» is a tool that will help us break down, analyse and understand how our data is used and presented to us in various ways and in different contexts," says Rettberg.

She envisions that researchers and students in various academic environments will be able to use it, but also designers working on the development of new platforms.

"I hope that more research in this field can contribute towards more people becoming more aware of the personal data they share and where," Rettberg says.

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