There are 7.9 billion mobile-connected phones on the earth right now, and you probably have at least one of them.

Your phone is constantly tracking and storing your data. And every day it gathers and produces more and more of that data. But what does that data say about you? Can it reveal anything about your relationships with the people you care about?

Four groups of Londoners, each with a different type of relationship. Each group gave a month's worth of data from their mobile phones.

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Alex E

“Maps are like campfires – everyone gathers around them, because they allow people to understand complex issues at a glance, and find agreement about how to help the land.”